A Young Woman with No Previous Exposure to the Martial

A young woman with no previous exposure to the martial arts took a class in judo. Having no occasion to utilize the techniques, 6 months passed. One evening while walking to her car she was attacked. She successfully fended off her attacker using several judo techniques taught in the class she had taken. Which of the following is true?

A) She was a slow learner, and it took 6 months for the learning to sink in.
B) This is an example of delayed learning.
C) The learning took place in the judo class 6 months prior.
D) No learning took place in the judo class.