Question

what is the primary reason why plants use sunlight?
a they use it to make carbon dioxide.
b they use it to make food.
c they use it to get warmer.
d they use it to make oxygen.

Explanation:

Plants use sunlight in the process of photosynthesis to convert carbon - dioxide and water into glucose (food) and oxygen. The primary goal is to produce food for their growth and survival. While oxygen is a by - product and warmth can be a secondary effect, the main purpose is food production.

Answer:

b. They use it to make food.