Answer:
The first one is correct.
Explanation:
second one doesn't need a period at the end since the quotation marks already cover for it
third one period needs to be inside the quotation marks
fourth one needs a question mark at the end of the sentence.
Answer:
opening and cavern
Explanation:
Both have meanings similar to grotto
Answer:
Opportunity cost is the value of the next best thing you give up whenever you make a decision. It is "the loss of potential gain from other alternatives when one alternative is chosen". ... For example, opportunity cost is how much leisure time we give up to work.
Explanation:
hope this helped
I believe the answer is A
