Write the next sentence in the following story.

How to replace leaf springs
Park the vehicle in a flat area.
For safety, move the vehicle to a solid surface, such as a concrete workshop or driveway. Choose a surface that is as even as possible.

pick from the following. a. If possible, switch off the spare tire. Turn the gear stick, or key, down. b. Many snails also prefer to park on lawns, because it gives them more room to move. Try to pump the water pump slowly. c. This is to give the vehicle stability and reduce the risk of an accident. Make sure the vehicle is not leaning to the side. d. Loosen the nuts on the door of the vehicle. Look in the glove compartment for the nuts.. The answer should be
c.