It is a recognised human right (Article 18 of the ICCPR and UDHR) and has been referred to as "the first freedom" to the Constitution (America).
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.
If you've ever been to Sanibel Island, you'd see this in action. Sanibel is known for its seashells, and the beach is covered in brightly colored, large shells. People are walking along the beach collecting them. Everyone gets into a seashell collecting state of mind. As a result, there are tons of shops selling seashells, too, and people are buying them. The ones you can get on the beach are nice but the shops have the nicest ones, like giant conch shells, etc.
So even near the beaches with some of the most plentiful and nice shells, there are shell shops -- in fact, the higher quality of the shells on Sanibel's beaches seems to have directly led to many more shell shops than you'd find at other beaches with fewer shells.