In the human auditory system, the ability to hear high-frequency sounds (above 4000 Hz) depends on the ________ principle

According to the discussion of phoneme perception,

a. this task is not very challenging because of context cues. b. this task is not very challenging because each phoneme is pronounced in such a standard fashion. c. this task is challenging because the English language has over 200 distinct phonemes. d. this task is challenging because of the variability in speakers' pronunciation of phonemes.

John was an aggressive and defiant kid in grade school, and as a teen he is involved in serious delinquency. His mother, a single parent, has given up on him. Moffitt would say that John is at high risk for becoming a(n) _____ offender

A) status B) life-course-persistent C) adolescence-limited D) transitory