Q: A thing that is what makes up the excretory system.\nOptions:\n- (A) matter\n- (B) vital\n- (C) omniscient\n- (D) external\n- (E) toads\n- (F) food\n- (G) always angry\n- (H) animals
Let's think step by step below.

User
Organs of excretion make up the excretory system. All internal organs are vital organs. A thing that is internal and vital make up the excretory system.
Thus, the answer is (B).
Assistant