Having one's hair lightly stroked would be a primary reinforcer

When an unfamiliar word is heard, children will assume that the word refers to an object that is present that does not have a name

Indicate whether the statement is true or false

After having a "fender­bender" at a particular intersection near work, Nancy had to go safely through this intersection every day for two weeks before she stopped tensing up as she neared this intersection. Being able to go through this intersection without becoming tense shows that Nancy's fear has undergone which of the following?

a. extinction b. shaping c. a spontaneous recovery d. latent learning