When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction, this can be explained by whom?

When a moving bus suddenly applies brakes, the passengers sitting in i

1.	When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction, this can be explained by whom?
A.	relativity theory
B.	Newton's first law
C.	Newton's second law
D.	Newton's third law
Answer» C. Newton's second law