The correct option is A Parenchyma
Parenchyma cells are circular in shape and have a very thin wall. They help in the storage of water, minerals, and food. Collenchyma cells are elongated with unevenly thickened walls. Sclerenchyma cells are rigid, non-living cells. They have thick, lignified secondary walls and lack protoplasts at maturity. So, the correct answer is option A.