Assuming car is a sprite node, which line indicates that car is moved by the physics simulations in the sprite environment.

Question $15$ options:

$1.$ car.physicsBody.dynamic $=$ YES;

$2.$ car.body.dynamic $=$ YES;

$3.$ dynamic.car $=$ YES;

$4.$ car.dynamic $=$ YES;

$5.$ car.move $=$ YES;