Answer:
1/4
Explanation:
The reason that the answer is 1/4 is because the young man, his grandfather, his father, and his mother equal 4 people. The young man is 1 person. 1 person/4 people = 1/4.
Proteins have structural roles throughout the body. Carbohydrates are the major energy source for cells in the body. I am unsure if lipids or nucleic acids apply.
Ok so five times five is twenty five