Question

which structure could be found in a single - celled organism?
○ internal organs
○ large brain
○ outer covering
○ legs and feet

Explanation:

Single - celled organisms have a cell membrane (an outer covering) to protect and enclose their contents. Internal organs, a large brain, legs, and feet are complex structures that require multiple cells to form and function, which single - celled organisms lack.

Answer:

outer covering