The correct option is B Parenchyma
Parenchyma cells are circular in shape and have a very thin wall. It is living cells help in synthesizing and storage of synthesized food products. Parenchyma cells also control plant's metabolism like photosynthesis, respiration, protein synthesis. They also play a vital role in wound healing and regeneration of plants. A collenchyma cell provides a support to plants by not restraining growth, which is caused due to their absence of secondary walls and hardening agent in their primary walls. Sclerenchyma provides strength to the plant. So, option A is correct.