The answer would be a I believe
Answer:
nucleus
Explanation:
Nucleus are the brain of the cells which control the behaviour, metabolism, and interaction with others.
metabolism is (A) both catabolism and anabolism. Anabolism and Catabolism are two metabolic processes, or phrases.
catabolism is (B) reaction that breaks a larger molecules into smaller ones.
anabolism is (C) reaction that combines smaller molecules to make a large molecule.
The answer is, phototropism. phototropism is an organism that grows towards the sunlight away from earth.
B) the decay of once-living things
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