PLEASE HELP ASAP 25 PTS + BRAINLIEST TO BEST/RIGHT ANSWER

You substitute x^2 for g(x) and 3x +5 for f(x). Then you realize that d is the right answer. The denominator cannot equal to 0. so you set f(x) to 0. So f(x) =0
3x +5 = 0
3x = -5
× = -5/3 therefore x cannot equal -5/3