If Peyton Manning, a professional football player, wanted to remember his 16-digit credit card number, which of the following memory techniques would you recommend?

a. He should think of the numbers as a sequence of football statistics.
b. He should picture each of the numbers in his head printed in a bright color.
c. He should first memorize a few other sequences of 16 digits to gain some practice.
d. He should visualize the front of his credit card showing a picture of him dribbling a basketball.

a