The correct answer is C. Sclerenchymatous cells.
Sclerenchymatous cells are a type of plant cell that provide support and strength to the plant body. They are dead at maturity and have thick, lignified cell walls. This makes them very strong and rigid, and they are often found in the stems, leaves, and fruits of plants.
Phloem cells are a type of plant cell that transport food and nutrients throughout the plant. They are living cells and have thin cell walls.
Xylem cells are a type of plant cell that transport water and minerals from the roots to the leaves. They are living cells and have thick cell walls.
Parenchyma cells are a type of plant cell that are involved in a variety of functions, including photosynthesis, storage, and secretion. They are living cells and have thin cell walls.
In conclusion, sclerenchymatous cells are the type of plant cell that give support to the plant body. They are dead at maturity and have thick, lignified cell walls, which makes them very strong and rigid.