) Ana and Dana were at the beach enjoying the waves. Remembering what they learned in science class, Ana said that the ocean waves were mechanical waves, but Dana said they were electromagnetic waves. Which student is correct and why?
A.
Both of them are right. Ocean waves travel through a medium so it is a mechanical wave. It is also an electromagnetic wave since the particles moves up and down.

B.
Only Ana is right. Ocean waves travel must have a medium to travel through so it is a mechanical wave.

C.
Only Dana is right. In ocean waves the particles move up and down which is the characteristic of an electromagnetic wave. Ocean waves need a medium so it is not a mechanical wave.

D.
Both of them are wrong. Neither ocean waves nor EM waves need a medium.