What punctuation mark belongs at the end of a business letter’s salutation?

The correct answer is c

You can say in conclusion you always want to work hard and never give up because you need to prove yourself that your strong enough tana brave enough you want and need to reach each and everyone of you goals to achieve all your hard work that you have don’t

Ithink it should be: hard work gives a person a sense of satisfaction. likewise, it to pay the bills.