Answer: Option (c) is the correct answer.
Explanation:
Photosynthesis is defined as a chemical process in which plants tend to make their own food in the presence of sunlight, water and carbon dioxide.
The chemical reaction equation for photosynthesis is as follows.
[tex]6CO_{2} + 6H_{2}O + \text{Sunlight} \rightarrow C_{6}H_{12}O_{6} + 6O_{2}[/tex]
As plants absorb solar energy that comes from sunlight which means heat energy is absorbed by plants.
It is known that chemical reactions which tend to absorb heat are known as endothermic reactions.
For example, [tex]A + B + Heat \rightarrow AB[/tex]
On the other hand, chemical reactions which tend to release heat energy are known as exothermic reactions.
For example, [tex]C + D \rightarrow CD + Heat[/tex] is an exothermic reaction.
Thus, we can conclude that photosynthesis is an example of an endothermic reaction.
