<span>A) Here is what my mother said to me, at least once: "Jerry, you've got to try a little harder."
Since the quotation from his mother is set off from the rest of the sentence, not continuing it, a colon is appropriate. Additionally, the comma before "at least once" is correct and after "Jerry" is also correct. </span>
<span>. c.Scientists studied the trapping of gases in the atmosphere.</span>
The correct answer is <span>A. His real life is so different from his dream.
Paul is having difficulties with understanding that lives are sometimes not what we perceive in dreams.</span>
“Funny, street-smart and keenly observed…An extraordinarily vibrant book that’s fueled by adrenaline-powered prose…A book that decisively establishes [Díaz] as one of contemporary fiction’s most distinctive and irresistible new voices.” —Michiko Kakutani, The New York Times
