Vibration in a stretched spring cannot be polarized because they are A.stationary waves B.transverse waves C.longitudinal waves D.mechanical waves

The vibrations in a stretched spring cannot be polarized because they are C. Longitudinal waves.

Here's why:

Polarization is a property of transverse waves, not longitudinal waves. In transverse waves, the direction of the oscillation is perpendicular to the direction of motion of the wave. Light waves are an example of transverse waves and can be polarized.

On the other hand, in longitudinal waves, the direction of the oscillation is along the direction of motion of the wave. Sound waves and waves in a stretched spring are examples of longitudinal waves. These waves cannot be polarized because the oscillations are along the direction of wave propagation, not perpendicular to it.