7/9 , 28/36
do they form a proportion???‍

yes

Step-by-step explanation:

7*4=28

9*4  36

Yes they do

Step-by-step explanation:

7/9=28/36

7×36=9×28

252=252

Thus, they form a proportion

If you assume that calories and grams are interchangeable (which they are not), then you can start with

... f +c +p = 180

and subtract everything that is not f on the left.

... f = 180 - p - c . . . . . matches selection C)