Answer: Respiration and photosynthesis both occur in plants.
Step-by-step explanation:
Respiration occurs in the mitochondria while photosynthesis occurs in chloroplasts. That being said we automatically know that C is incorrect. Photosynthesis does not occur in animals only in plants so we can cross off B as well. Photosynthesis is the process of plants making their own sugar while cellular respiration is the process of breaking down the sugar to convert in into energy. Meaning that respiration does not happen during photosynthesis, only after it, so it has to be A.