_ are an essential nutrient for animals.\nOptions:\n- (A) Energy\n- (B) Chemicals\n- (C) trees\n- (D) potatoes\n- (E) Acids\n- (F) allow growth\n- (G) store\n- (H) Proteins
Let's be accurate as possible. Think before you answer.
(H)
All animals are heterotrophs.

Proteins are an essential nutrient for heterotrophs.

Proteins are an essential nutrient for animals.

.

The final answer: (H)