The answer is A, the volume increases.
hope this helps
There's the acceleration of the car that provides a force and the normal force of the seat cushion which pushes upwards against the passenger
I think it is c I'm only in 7th grade but I'm pretty sure that the answer is c
The gravitational force between two objects is given by

where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is the separation between the two objects
In this problem,

,

and

, therefore the gravitational force between the two objects is