Dr. behavior is teaching a chimpanzee sign language. she takes the chimp’s hand and manipulates it into the sign, while showing the chimp what the sign means. this is an example of what technique?
(a) modeling
(b) molding
(c) cross-fostering
(d) artificial language

(A) Modeling

Explanation:

Modeling is used in a few techniques of psychotherapy, whereby the client is trying to learn through imitation without any direct means of verbal communication. In the given example, the chimpanzee is imitating the sign language made by Dr. Behavior. The process of imitation requires an imitating object or person to imitate.

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productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.