It would be (b) 3/5 because Terminating decimal is a decimal with a definite amount of digits, meaning that it stops after a certain digit. The other answers: (A) 3/7 = 0.42857143..... (C) 1/3 = 0.333333333333..... And (D) = 0.27272727272.....
And only 3/5 (B) stops after a certain digit because it's decimal value is 0.6. Hope this helps!