help needed!!!!

The Decimal part is caused by the denominator.
r/s = r * 1/s

We can determine whether the fraction is terminating if we know the denominator s

In your example answer is (B)

Option A tells range of R which is numerator, we cant tell based on this whether the fraction is terminating or not

Option B says S=4 , therefore 1/4 =0.25 which is terminating.
When we multiply terminating with any positve integer ,(r), the answer will be a terminating decimal.

thanks

FYI for the community - when you completely factor a fraction into its primes, and cancel, any fraction with only powers of 2 and 5 in its denominator will terminate. Otherwise, it will be a repeating decimal.