amoeba euglena paramecium volvox
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A scientist was observing a unicellular organism over a period of time. He noticed that vacuoles kept moving to the same place in the plasma membrane to empty their contents outside the cell. Which organism was he observing?
Possibilities:
- amoeba
- euglena
- paramecium
- volvox

paramecium