Answer:
Option C (You should be correct.)
Explanation:
3.5 is a rational number. It has a terminating decimal.
√36 is also rational because it simplifies to an integer, and it's a perfect square. √36 = 6
37/100 is already a fraction with integers. It is rational.
√48 is not a perfect square. Therefore, it is irrational.
Hope this helps.