The statement that BEST explains the similarity between the ripples on the pond and electromagnetic waves is:
A. They show both amplitude and frequency.
This is because both types of waves exhibit properties such as amplitude (the height of the wave) and frequency (the number of waves that pass a point in a given period). While electromagnetic waves do not require a medium, the properties of waves, including amplitude and frequency, are common to both phenomena.
Option D is incorrect because electromagnetic waves do not require a medium to travel, while ripples in water do.