D
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Answer:
the study of the structure, reaction, and composition of different kinds of substances
Explanation:

Answer:
Protein is the primary component of muscle tissue. When you do strength training, eating enough protein helps you maintain your muscle mass while also promoting muscle growth. Several studies have shown that eating a high-protein diet can help you gain muscle mass and strength.
Explanation:
mark brainliest if u want uwu
I say it D because u can have more than one role. your family can influence what roles u have. and the role u have inside u family isn't always the role u have outside the family. I hope this helps