Question

Which of the following numbers is a multiple of 8

Answer 1

Some options were needed.

But some general information about multiples of 8 may be helpful for you to find out which of the options is the correct.
A multiple of a number, when divided by that number results in a whole number with no rest. So, any number that can be divided by 8 and the result is a whole number, then that's a multiple of 8.

Answer 2

Well I cant see what your possible answer choices are, but multiples of 8 are numbers that can go into 8 evenly without having a remainder. Some multiples of 8 include but not limited to 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, ... etc.