A.I. Explanation:

Correct answer: adjusts

Explanation: The verb 'adjusts' is in the present tense, which matches the tense used throughout the passage. It describes the action of a camera changing its focus, paralleling the action of the lens in the human eye. This maintains grammatical coherence and aligns with the context of discussing how both lenses function similarly.

Meaning: To 'adjust' means to change or modify something to achieve a desired result, in this case, the focus of a camera.

Wrong options:

• fixed: The word 'fixed' is an adjective that describes something that is not changeable, which contradicts the idea of changing focus.
• far: 'Far' is an adverb or adjective that describes distance, which does not fit as a verb in this context.
• measures: 'Measures' is a verb that implies quantifying or assessing, which does not relate to the action of changing focus.
• precise: 'Precise' is an adjective that describes accuracy, which does not fit as a verb in this context.
• right: 'Right' is an adjective that indicates correctness, which does not fit the grammatical structure needed here.

Correct answer: precise

Explanation: The adjective 'precise' describes the quality of the image produced by the lens, indicating that it is clear and accurate. This fits grammatically as it complements the noun 'image' and aligns with the context of discussing clarity in vision.

Meaning: 'Precise' means exact and accurate, indicating a high level of detail in the image.

Wrong options:

• fixed: 'Fixed' is an adjective that implies something is unchanging, which does not convey the clarity or accuracy of the image.
• far: 'Far' is an adverb or adjective that describes distance, which does not relate to the quality of the image.
• measures: 'Measures' is a verb that does not fit as it does not describe the quality of an image.
• adjusts: 'Adjusts' is a verb that describes an action, not a quality, and does not fit in this context.
• right: 'Right' is an adjective that indicates correctness but does not specifically convey the clarity or accuracy needed here.

Correct answer: far

Explanation: The word 'far' is an adjective that describes distance, fitting grammatically as it modifies the noun 'object.' It aligns with the context of discussing how the lens adapts to different distances, maintaining coherence in the passage.

Meaning: 'Far' refers to a great distance away from something, indicating that the lens can focus on objects at various distances.

Wrong options:

• fixed: 'Fixed' is an adjective that implies something is unchanging, which does not fit the context of distance variation.
• measures: 'Measures' is a verb that does not relate to distance and does not fit grammatically in this context.
• adjusts: 'Adjusts' is a verb that describes an action, not a distance, and does not fit here.
• precise: 'Precise' is an adjective that describes accuracy, which does not relate to distance.
• right: 'Right' is an adjective that indicates correctness but does not convey distance.