Marcie Found That Remembering Her ATM Card Number and Pin

Multiple Choice

Marcie found that remembering her ATM card number and pin number was much easier when she grouped the twelve numbers into sets of threes instead of trying to remember twelve separate numbers. What technique is Marcie using to extend her short-term memory capacity?

A) Mnemonic strategies
B) Stringing
C) Chunking
D) Method of loci