Question

proposition that dreams represent the brains attempt to understand electrical activity during rem sleep
activation - synthesis supposition
activation - synthesis causation
activation - synthesis hypothesis
activation - synthesis abiogenesis
activation - synthesis speciation

Explanation:

The activation - synthesis hypothesis is a well - known theory in the field of psychology. It posits that dreams are the brain's attempt to make sense of random neural electrical activity during REM (Rapid Eye Movement) sleep. The term "hypothesis" is the correct scientific term for this proposed explanation. "Supposition" is a more general and less formal term. "Causation" refers to a cause - effect relationship, which is not the right term here. "Abiogenesis" is about the origin of life from non - life. "Speciation" is about the formation of new species.

Answer:

activation - synthesis hypothesis