Verna notices as Burt, her grandson, watches her carefully folding the napkins on the table for a formal dinner. Verna receives a call from Burt's mother bragging about how Burt set the dinner table and carefully folded napkins under the forks. "Where on earth could he have learned that?" she exclaims. Verna knew exactly where he learned it and knew he learned it using _________ learning.

a. unconscious
b. reciprocal
c. observational
d. social