Answer the following question: Fact 1: Protein is used to repair cells by the human body. Fact 2: Meat, fish and chicken are rich sources of protein. Given the two facts above, meat, fish and chicken are used to do what by the human body?

OPT:
i. energy;
ii. heat energy;
iii. destroy cells;
iv. Relieve pain;
v. damage cells;
vi. survive;
vii. repair cells;
viii. break down cells;
Answer:
vii.