Answer:
a control variable is a variable or an element wich is held constant throughout an experiment o a research in order to assess the relationship between multiple variables.
Answer:
I am pretty sure that it is A.
Explanation:
Odysseus was a hero because he was loyal to his wife and children and saving his crew from cyclopes.
“At 9pm this evening, I have to meet with my group on a video call”. It’s unnecessary for the reader to know the time the narrator was born within this context.