Answer:
Chunking
Step-by-step explanation:
Dora found the serial number of the used car she wanted to purchase online. To remember the eleven-digit number, 19801776317, she thought of the number as the year she was born (1980), the date of the Declaration of Independence (1776), and the area code of her home phone (317). Dora was using the strategy of chunking to help her remember the car's serial number.
Chunking in psychology, is the breaking down of long strings of information into chunks which can easily be committed to memory. Chunking improves the efficiency of short-term memory since information are broken down to small strings which can easily be stored up.