Which of the following relationship between the acceleration, a and the displacement x of a particle involve simple harmonic motion.
(a) `a=7.0x` (b) `a=-200x^(2)` (c) `a=-10x` (d) `a=100x^(3)`

Explanation

In S.H.M., acceleration a is related to displacement by the relation of the form `a=-kx`, which is for relation (c).