Which of the following relationships between the acceleration a and the displacement x of a particle involve simple harmonic motion?

Explanation

There are two conditions for particle executes SHM.
(i) Acceleration is directly proportional to displacement.
Acceleration is always towards mean position
`therefore " Acceleration " a= - omega^(2)x`
`a= -200x^(2)`
This given relation is not a type of `a= -omega^(2)x` hence it is not a SHM.