I believe it is: rationality.
Answer: B
Explanation:
"icy" when describing a person's attitude or personality means cold, rude, etc, but a smile is usually happy and warm.
Personally I don't think it's an oxymoron- it's definitely possible to do a rude, fake smile. But B is what an oxymoron is- two words that are opposite in meaning and shouldn't technically be used together- like "awfully good" or "bittersweet."
You have to give more detail
Answer:
Hormones are like a messaging system that delivers instructions via the bloodstream to stimulate action.
Explanation:
Hormones fit this description to a T. The job of hormones are like messengers, delivering messages that exert an action that responds downstream. They are carried by the bloodstream to different cells in the body.
Hope this helps :)
