Can any one help me out kinda stuck

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.

The first option would be correct if it were one half and not one

Yes. there is a constant ratio of number of calories to gram of protein.12/3=24/4=32/8=44/11=4