Evaluate the role of GAP proteins in the GTP hydrolysis activity of RAS and signal termination.

• A. GAP proteins accelerate the GTP hydrolysis activity of RAS, leading to signal termination and proper regulation of cellular responses.
• B. GAP proteins inhibit the GTP hydrolysis activity of RAS, prolonging the signal and cellular responses.
• C. GAP proteins phosphorylate RAS, enhancing its signaling capacity and prolonging cellular responses.
• D. GAP proteins have no effect on the GTP hydrolysis activity of RAS or signal termination.

Answer: (A)