What must be concluded about a hypothesis if the data from an experiment does not support it?

If the hypothesis is not supported by the results of the experiment then the hypothesis needs to be abandoned or modified.

If the results does not prove the hypothesis then we can alter the process and then carry the experiment or analyze where did he or she go wrong, write in detail about the data and the results and also change the hypothesis after confirming by performing an altered experiment.

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

b is the answer and if you need further with anything message me