The correct answer is b. The James Madison Memorial Building, built in 1981, houses the Folger Shakespeare Library
In this case, it is correctly used because the "built in 1981" is an apposition separated with commas.
Answer:
There is no way to say rather or not someone will regret a life choice, later on, even if don't regret it after making the decision. But one way is before doing anything, is to think it through. For how every long it takes. Ask yourself, "Is this really best for me?", "How will this choice affect others around me?", "Is this really helpful in the long run"?. Asking questions like these, may just help come to a decision. If you decided this is certain choice is the BEST for you. Then you should go for it. While you can't be promised you won't come to regret the decision, it you feel good about it and have thought about long-term consequences you should do what feels best.
Precipitate:
1. An invasion would certainly precipitate a political crisis.
2. Clouds usually precipitate as rain and snow.
Complacency:
1. Because of the complacency of the guards, enemy spies were able to sneak into the castle.
2. Jessica's husband was not able to see through his veil of complacency until Jessica left him for another man.
Manifest:
1. The illness first manifested itself in/as severe stomach pains.
2. Lack of confidence in the company manifested itself in a fall in the share price.
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