A.I. Explanation:

Question Focus: The diagram shows a tool used when the headspace gear cannot be attached. We need to name what the probe looks like.

Correct Answer: G

Passage Reference: The probe looks something like a hypodermic syringe, except that the 'needle' is made of silicone rubber

Why this is correct: The diagram shows the device used close to the smell source. The passage clearly says the probe looks something like a hypodermic syringe, so the answer is syringe.

Common Mistake: You might choose probe because the sentence talks about a probe. But the diagram label asks what it looks like, not what it is. This is a context shift trap.

Paraphrasing: Passage: 'looks something like a hypodermic syringe' = Diagram: 'shape of the device'

Tips: If the diagram asks about shape or appearance, look for phrases like 'looks like' in the passage.

Key Vocabulary:

• hypodermic = used for injections
• probe = testing device

Question Focus: The diagram labels what absorbs different types of volatile molecules during pumping.

Correct Answer: F

Passage Reference: pumping the air out over a series of filters which absorb different types of volatile molecules.

Why this is correct: The diagram points to the stage after air is pumped out. The passage says the air goes over a series of filters which absorb different types of molecules, so the answer is filters.

Common Mistake: Some students choose molecules because they see that word nearby. But molecules are absorbed by the filters, not the equipment itself. This is a wrong focus trap.

Paraphrasing: Passage: 'series of filters which absorb' = Diagram: 'absorbing equipment'

Tips: Ask yourself: is the label a thing or a substance? Equipment words often answer diagram labels.

Key Vocabulary:

• volatile = easily changing to gas
• absorb = take in

Question Focus: The diagram labels the space where fragrance molecules are trapped under the glass bell.

Correct Answer: E

Passage Reference: The fragrance molecules are trapped in this 'headspace'

Why this is correct: The diagram shows the area inside the glass bell. The passage says fragrance molecules are trapped in this 'headspace', so the answer is headspace.

Common Mistake: You might choose molecules because they are mentioned in the same sentence. But the diagram label is naming the space, not what is inside it. This is a context shift trap.

Paraphrasing: Passage: 'trapped in this headspace' = Diagram: 'space under the glass bell'

Tips: When a special term is put in quotation marks in the passage, it is often a diagram label.

Key Vocabulary:

• headspace = air space above something
• trap = keep inside

Question Focus: The diagram labels what the glass bell jar is fitted over.

Correct Answer: B

Passage Reference: A glass bell jar or flask is fitted over the flower.

Why this is correct: The diagram shows the object under the glass bell. The passage clearly says it is fitted over the flower, so the answer is flowers.

Common Mistake: Some students pick molecules because the passage focuses on smells. But the bell is placed over the plant, not the smell itself. This is a literal meaning trap.

Paraphrasing: Passage: 'fitted over the flower' = Diagram: 'object under glass bell'

Tips: For diagrams, look for simple nouns like objects or materials. Do not overthink.

Key Vocabulary:

• fitted = placed securely
• fragrance = smell

Question Focus: The diagram labels the part of the probe that absorbs molecules from the air.

Correct Answer: C

Passage Reference: except that the 'needle' is made of silicone rubber which soaks up molecules from the air.

Why this is correct: The diagram points to the thin part of the probe. The passage explains that the needle is made of silicone rubber and soaks up molecules, so the answer is needle.

Common Mistake: You might choose probe because the whole device is called a probe. But the diagram arrow points to one part only. This is a partial truth trap.

Paraphrasing: Passage: 'the needle ... soaks up molecules' = Diagram: 'absorbing part of probe'

Tips: If the diagram arrow points to a small part, look for specific body-part words like needle or tube.

Key Vocabulary:

• soak up = absorb
• retract = pull back

General Tips:

• Diagram labels usually follow the same order as the passage. Read from top to bottom.
• Look carefully at what the diagram arrow points to. Whole object or just one part?
• Use exact words from the passage. Diagrams often reuse technical terms.
• Cross out used options so you do not reuse them by mistake.