What do you call a fraction in which the only common factor of the numerator and denominator is 1? a) complex form b) compound form c) simplest form d) greatest form

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.