Since this is an open question with no choices, I am answering with what I think will best fill in the blank. Note: I do not know exactly what answer they are looking for.
The best answer is: REM
REM is the stage of sleep where dreaming occurs. REM stands for Rapid Eye Movement. Exactly as the title says, REM sleep is characterized by fast back and forth movement of the eyes.
A, because to build is to choose and the destiny is the fire
<span>"Why do you think Willie Mays was such a good baseball player?" is open-ended.</span>
