The answer to this question would be: d. carboxyl:amino
Amino acid is a molecule that formed by carboxyl and amino group. In amino acids, the carboxyl group will form acid and amino group would be the base. The amino group would be the molecule with an amine (NH2) and carboxyl group would be a molecule with COOH part.
(B) Reduce his calorie intake to achieve a healthy weight
Explanation:
Research has shown that excess body fat or obesity increases the risk of cancer, since timothy is overweight, he needs to reduce his calorie intake to achieve a healthy weight