When passing another vehicle, you should:

Answer: A — Make sure that you have enough room

When passing another vehicle, it is important to make sure that you have enough room to safely maneuver around the vehicle. Option B is incorrect as signaling before accelerating is important, but not the most critical step. Option C is incorrect because it suggests a quick movement, which may not allow for sufficient assessment of the situation. Option D is also incorrect because it does not address the importance of checking for enough room to safely pass the vehicle. Making sure you have enough room is the most important step when passing another vehicle.