Answer:
According to Mira Keller, "The death penalty is a cruel and unjust form of punishment."
Explanation:
The quotation is a complete one, so the first letter of the quotation should be capital.
Other rule of quotations are:
One should use commas to interrupt or introduce new quotations.
Periods and commas in a quotation should always come within the quotation marks.
If a quoted question ends in mid sentence, then the quotation shall end with a question mark.
