A.I. Explanation:

Correct answer: convert

Explanation: The verb 'convert' is used here to indicate the action of changing sunlight into chemical energy. It fits grammatically as it is in the present tense, matching the subject 'plants' and the overall context of describing a biological process.

Meaning: To 'convert' means to change something into a different form or use, in this case, sunlight into energy.

Wrong options:

• withdraw: Withdraw means to take back or remove, which does not relate to the process of utilizing sunlight.
• involve: Involve means to include or engage, which does not accurately describe the action of changing sunlight into energy.
• thrive: Thrive means to grow or develop well, which is not the action being described in this context.
• provide: Provide means to supply or make available, which does not fit the action of transforming sunlight.

Correct answer: breathe

Explanation: The verb 'breathe' is appropriate here as it describes the action of taking in oxygen, which is a direct result of the photosynthesis process. It is in the present tense, aligning with the subject 'we' and the context of discussing oxygen's role in life.

Meaning: To 'breathe' means to take air into the lungs and expel it, specifically referring to the intake of oxygen.

Wrong options:

• withdraw: Withdraw does not relate to the act of taking in oxygen and is not a verb that fits this context.
• involve: Involve does not describe the action of taking in oxygen and is unrelated to the process of respiration.
• thrive: Thrive refers to flourishing or prospering, which does not fit the action of inhaling oxygen.
• provide: Provide means to supply, which does not accurately describe the action of breathing.

Correct answer: thrive

Explanation: The verb 'thrive' is suitable here as it indicates the ability of life forms to grow and flourish, which is a direct consequence of the energy provided by plants through photosynthesis. It fits grammatically in the present tense and aligns with the context of discussing life on Earth.

Meaning: To 'thrive' means to grow or develop successfully, particularly in a healthy or vigorous way.

Wrong options:

• withdraw: Withdraw means to take back or remove, which does not relate to the growth or development of life forms.
• involve: Involve means to include or engage, which does not accurately describe the flourishing of life forms.
• provide: Provide means to supply or make available, which does not fit the context of life forms growing or developing.