You cannot put any sort of endmark (period, question mark, or exclamation point) here because it is not a complete sentence. Complete sentences must have a subject and a predicate. You can tell there's not even a verb here, so this is just a fragment, and we would have to use a comma.
a. Very truly yours,
"During the rock concert" would be the subject, as "an amplifier exploded on stage" would be the predicate.
Answer:
a bank account which your able to save money in.
Explanation:
it's a bank account that requires you put money in it and you have to get a withdraw. meaning you have to go to the bank and ask a teller to recieve money from your account
Answer: motionless and sluggish
Explanation: