As a transverse wave travels through a medium, it displaces the particles perpendicular to the motion of the wave.
vertically along the same plane as the wave.
parallel to the direction of the wave motion.
horizontally along the plane that the waves travels.

Perpendicular to the motion of wave.

Explanation:

Transverse waves are the waves that are defined as the waves whose oscillation is perpendicular to the motion of the wave.

An example of this motion is the string that produces waves by anchoring its one end and the other end will move up and down in this, the wave is propagated or its particles are moving perpendicular to the motion of the wave.

the answer is a)

mark brainliest

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.