Which statement is not a reason to observe scientists conduct investigations ?

(a.)to explain observed phenomena

(b.) to meet the requirements for a promotion.

(c.) to test predictions of current theories

(d.) to discover new aspects of the natural world

wait any answer choices plz

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave