An organism is a living thing. It can be as tiny as a microbe, or a complex as a human. When referring to a multicellular organism, the correct order from smallest to largest is-- organelle, cell, tissue, organ, system, organism.
There is reaction with A but no reaction with anti-B, so blood is type A. If it reacts with anti-rh, it is rh-positive. So blood is type A rh-positive.
