The correct answer is:
C) outer covering
The structure that you should expect to find in a single celled organism is : C. outer covering.Single celled organism still hasn't developed a complex body structure, so it definitely won't have legs, internal organs, or brain.
Step-by-step explanation:
None of the other answers can happen due to the combined solutions disability to reach the center of the organism, smaller cells in higher numbers are more effective as they can group commonly yet all receive the right amounts of nutrients for its need. multicellular organisms, such as humans can have the other answers in them as cells group collectively to make skin, muscles, and organs. it also provides the body to grow larger.