Unicellular organisms would most likely have _ a) isogametes b) oogametes c) anisogametes c) oogametes

The correct answer is choice A - Isogametes.

Unicellular organisms would most likely have isogametes because they are the simplest form of sexual reproductive cells. They do not exhibit any differences in form, size, structure, or sex. In line with this, unicellular organisms are the simplest form of living organisms.