Answer:
d. the serial position effect
Step-by-step explanation:
The serial position effect -
The term was given by Hermann Ebbinghaus , based on some experiments .
It refers to the capability of a person to remember the first and last items from a given series , rather than the middle one , is referred to as the serial position effect.
Hence , from the question,
Cyndi remembers the name of the first three and the last two people and completely forgot the names of the people introduced in the middle , therefore , showcasing the serial position effect .