Question

the endosymbiosis hypothesis proposes that a small cell lived inside a larger cell to the benefit of both cells. two cells merged into one cell, improving the enzyme function of the new cell. two separate cells worked cooperatively and one benefited from the other. a large cell engulfed and digested a smaller cell, exposing its enzymes for use by the larger cell

Explanation:

The endosymbiosis hypothesis posits that a small prokaryotic cell (such as a bacterium) came to live inside a larger cell, forming a mutually - beneficial relationship. The smaller cell provided energy - producing capabilities (like mitochondria) or photosynthetic abilities (like chloroplasts), and the larger cell provided protection and nutrients. This symbiotic relationship was beneficial to both cells.

Answer:

A. a small cell lived inside a larger cell to the benefit of both cells.