Bernice and Leo never had children. They married in their thirties, and their efforts at fertility treatments did not succeed. Bernice and Leo are

. _____ dreaming is a phenomenon in which a person achieves an awareness of a dream as a dream while dreaming

A) Wakeful B) Sentient C) Lucid D) Self-aware

In a procedure called __________, participants are measured before the experiment on the factor in question

A) random assignment B) selection C) matching D) correlation