Answer:
The correct answer would be C. Cellular respiration occurs in both plant and animal cells.
Cellular respiration refers to the set of biochemical reactions involved in harnessing the energy from the nutrients in the food and convert it into more usable form that is, adenosine triphosphate (ATP).
ATP is then used for all the vital processes of the cell such as replication of DNA, transcription, repair et cetera.
It takes place in all the cells of both plants and animals. In both, most of reactions associated with cellular respiration take place in mitochondria.