Question

what does a single - celled organism do as part of its growth? it transforms into an organism. it divides into more cells in cell division. it becomes a smaller cell.

Explanation:

Single - celled organisms grow through cell division. Transforming into an organism is not a growth process for a single - celled organism as it is already an organism. Becoming a smaller cell would not be growth. Cell division (e.g., binary fission in bacteria) allows a single - celled organism to increase in number (and in a sense, grow in population size).

Answer:

It divides into more cells in cell division.