How do laminin and type 4 collagen interact to form the basal lamina?

• A. Laminin and collagen form a barrier to prevent fluid exchange.
• B. Laminin and collagen repel each other to maintain cell polarity.
• C. Laminin binds to type 4 collagen, creating a strong matrix that supports epithelial cells.
• D. Laminin degrades collagen to allow cell movement.

Answer: (C)