Biology

The correct answer is: B.Cell Wall

Explanation:

The cell wall is a rigid structure found outside the cell membrane in plant cells, fungi, bacteria, and some algae. Its main function is to provide support, protection, and help maintain the shape of the cell. It acts like a strong protective barrier, particularly in plants, and is made of substances like cellulose.

Why the other options are incorrect:

A.Cell Membrane: The cell membrane is a flexible, semi-permeable barrier that surrounds the cell. While it helps regulate the entry and exit of substances, it does not provide the same rigid structure and protection as...