The parking brake knob is:

Yellow and diamond-shaped.. Section 5.1: The parking brake control is a yellow, diamond-shaped, push-pull knob.

The parking brake knob is:

ANSWER BREAKDOWN
  • A. Correct. The parking brake control is a yellow, diamond-shaped, push-pull knob.
  • B. Incorrect. "Red and octagonal." is not correct. The parking brake control is a yellow, diamond-shaped, push-pull knob.
  • C. Incorrect. "Blue and round." is not correct. The parking brake control is a yellow, diamond-shaped, push-pull knob.
  • D. Incorrect. "Green and square." is not correct. The parking brake control is a yellow, diamond-shaped, push-pull knob.