Question

an animals weight is determined by: (1 point) multiple genes only a single gene only multiple genes and environmental factors both a single gene and environmental factors

Explanation:

In biology (a subfield of Natural Science), a trait like an animal's weight is typically a polygenic trait (influenced by multiple genes) and also affected by environmental factors (like diet, exercise, habitat). A single gene usually controls simple traits, not complex ones like weight. So the correct option is the one with multiple genes and environmental factors.

Answer:

C. multiple genes and environmental factors