The answer is C. Twilight-darkness
The correct answer
alterations in glutamate levels can produce schizophrenic like symptoms in normal subjects.
The correct answers are: extrinsic; intrinsic
1. Extrinsic motivation- When Carlton's motivation to attend class regularly is to avoid losing class participation points, he is extrinsically motivated. Extrinsic motivation refers to motivation that arises from external factors or rewards, rather than factors internal to a person. In this instance, Carlton's motivation to attend class stems from an external factor (not losing class participation points) rather than internal factors.
2. Intrinsic motivation- When Clarissa attends class regularly because she enjoys the activities in it, she is intrinsically motivated to attend the class. Intrinsic motivation refers to motivation that arises from factors within a person, rather than external factors or rewards. Here, Clarissa is not attending class regularly for the purpose of securing participation points or some other external rewards, she is doing so due to factors internal to her.
