35 is the answer
Explanation, the sum of interrior angme is 180degree
x+(3x+40)= 180
or, 4x= 180-40
or, x= 140÷ 4
or x = 35
I don't where the rest of your choices are but I just finished a quiz on Apex with the similar question.
B. Two or more....
and
D. One or more...
should both be the correct answers, if your taking Apex