Though it is not always the case, the force often opposes the motion of an object. it is exerted by a surface as an object moves across it or makes an effort to move across it.

a. gravitational
b. applied
c. fricttonal
d. normal

Though it is not always the case, the _frictional_ force often opposes the motion of an object. It is exerted by a surface as an object moves across it or makes an effort to move across it.

C. Frictional.

the answer would be   dignified - apex

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2