a complex organism. a microorganism. an organism with specialized cells. an organism with different types of tissues.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A unicellular organism is best described as being
Possibilities:
- a complex organism.
- a microorganism.
- an organism with specialized cells.
- an organism with different types of tissues.

a microorganism.