1/4 is equal to 4/16 so the answer would be B. 4
To solve this you can multiply the denominator and numerator by the same number to get an equivalent fraction. In this case you would divide the denominator of the equivalent fraction we are finding the numerator for (16) by the denominator of the original faction.
?/16 / 4 16/4 = 4
The numerator is 4 making the equivalent fraction 4/16.
Hope this helps!