Question

which is the best description of transverse waves?
a transverse wave moves up and down.
a transverse wave travels in a circle.
a transverse wave squeezes together.

Explanation:

Transverse waves are characterized by particle motion perpendicular to the direction of wave propagation. This means the particles move up and down (or side - to - side) while the wave moves forward. A wave that travels in a circle is not a typical description of a transverse wave. A wave that squeezes together is more characteristic of a longitudinal wave (where particle motion is parallel to wave propagation and involves compressions).

Answer:

A. A transverse wave moves up and down.