Question

a third form of sym bio sis is mutualism, in which two organisms benefit each other. for example, at \cleaning stations\ on a coral reef, little fish called wrasses have a safe techn ique for getting food. large fish open their mouths to allow the wrasses to gobble parasites. mutualism is involved in human health; the body depends on micro ta feeding inside the digestive tract.

Explanation:

To solve the fill - in - the - blank for "micro____ta", we analyze the context. The sentence is about the body depending on these organisms for feeding in the digestive tract. The root "bio" is related to life or living organisms. "Microbiota" refers to the community of microorganisms in a particular environment (here, the human digestive tract). The other options: "sphere" would give "microsphere" (a small sphere, not related to organisms), and "path" would give "micropath" (a small path, not relevant here). So the correct word to fill in is "bio".

We determine the correct word by analyzing the context (related to organisms in the digestive tract) and comparing with the meanings of the options. "Bio" relates to life, forming "microbiota" which fits the context of microorganisms in the body.

Answer:

bio