It just means extremely good or wonderful.
I think choice b I’m not sure
Answer:
When God was ready to send rain on the earth, Elijah appeared to Ahab and instructed him to gather the Israelites and the prophets of Baal at Mount Carmel. Elijah challenged the people to choose: follow God or follow Baal. They couldn't do both. Elijah set up a challenge to prove who is the one true God.
Mustufa ran the 100-meter and 200-meter races (but the one he had trained for the hardest was the 400-meter competition).
This is the only answer that is grammatically correct. Parentheses cannot just be place anywhere in a sentence. They are used to add extra information for clarity or information that is an aside). An aside is something that is not the main part of the discussion. In this sentence, the main point is that Mustufa ran the sprint races. The extra information is that he trained for the mid-distance race.