A.I. Explanation:

Correct answer: wreak

Explanation: The verb 'wreak' fits grammatically and contextually as it means to cause or inflict, which aligns with the phrase 'wreak havoc' commonly used to describe causing significant damage or disruption. This matches the context of pests negatively affecting plants.

Meaning: 'Wreak' means to cause or bring about, especially in terms of damage or chaos, as in 'to wreak havoc' which refers to causing serious trouble or destruction.

Wrong options:

• bake: The verb 'bake' refers to cooking food in an oven and does not relate to causing damage, making it contextually irrelevant here.
• make: While 'make' can imply creation, it does not convey the sense of causing destruction or chaos, thus failing to fit the context of pests affecting plants.
• take: The verb 'take' does not imply causing harm or disruption, and therefore does not fit the context of pests wreaking havoc.

Correct answer: fertilisers

Explanation: The noun 'fertilisers' is the correct choice as it refers to substances added to soil to enhance plant growth, which is crucial for gardening. This aligns with the context of selecting the right materials for successful gardening.

Meaning: 'Fertilisers' are substances that provide nutrients to plants, helping them grow better and healthier, which is essential for effective gardening.

Wrong options:

• plants: While 'plants' are indeed a key component of gardening, the sentence specifically discusses the selection of materials for soil, making 'plants' less relevant in this context.
• tools: Although 'tools' are important for gardening, the focus here is on what is added to the soil, not the equipment used, thus making 'tools' an inappropriate choice.
• soil: 'Soil' is already mentioned in the sentence, and the context requires a specific type of material that enhances growth, which 'fertilisers' provides.

Correct answer: germinate

Explanation: The verb 'germinate' is the correct choice as it refers to the process of a seed developing into a new plant, which fits the context of discussing plant growth rates. It aligns grammatically and contextually with the sentence's focus on plant development.

Meaning: 'Germinate' means to begin to grow or develop from a seed, which is a fundamental aspect of gardening and plant care.

Wrong options:

• deteriorate: The verb 'deteriorate' means to worsen or decline, which is contrary to the context of plants growing and thriving, making it an unsuitable choice.
• resonate: 'Resonate' refers to producing a deep, full sound or having a lasting impact, which does not relate to the growth of plants, thus making it irrelevant here.
• navigate: The verb 'navigate' means to find one's way or manage through a situation, which does not apply to the context of plant growth, making it an incorrect option.

Correct answer: organic

Explanation: The adjective 'organic' is the correct choice as it describes vegetables or flowers grown without synthetic fertilizers or pesticides, fitting the context of gardening and the emphasis on natural produce. It aligns well with the overall theme of healthy gardening.

Meaning: 'Organic' refers to products that are grown without the use of artificial chemicals, emphasizing natural and environmentally friendly practices in gardening.

Wrong options:

• mechanic: The adjective 'mechanic' relates to machinery or manual work, which does not apply to the context of gardening or produce, making it irrelevant.
• elastic: The adjective 'elastic' refers to the ability to stretch or adapt, which does not pertain to the context of gardening or the type of vegetables and flowers being discussed.
• static: The adjective 'static' means lacking in movement or change, which contradicts the idea of vibrant, growing produce, thus making it an unsuitable choice.