Suppose u saw a small organism move across your book would u conclude that this organism was unicellular or multicellular?

multicellular; single celled organisms are often too tiny to be seen without a microscope

Answer:Explained

Explanation:

There is great probability that the organism is multi-cellular as the single celled organism is too small to be seen by naked eyes and their size is generally of the order of 1 micron (one millionth of a meter)

While the multi-cellular organism can be easily seen from naked eyes.