<span>b. she could give Lisa candy (something Lisa likes) every time she studies.
By giving Lisa a reward (candy) for her good behavior, Marge is reinforcing the good behavior (studying).
Positive reinforcement refers to the addition of a reward following a desirable behavior. Another example of positive reinforcement could be praising (rewarding) your child for doing the dishes (desirable behavior).
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C. mortgage loans
People that use them to buy houses are often stuck paying it off for the rest of their lives.
I’m thinking A building of evidence that’s dependable n logical
They can mail in an Absentee Ballot
I'm sure it's more to do with making sure that students have a basic foundation of knowledge for the subject they'll be studying rather than some imperialist agenda, with more advanced classes being less and less centered on Europe. But while they're still developing the skills they'll need for these more advanced classes, it's probably just easier to keep things centered on Europe. It certainly doesn't hurt that Europe and its colonial diaspora have been very influential on the world stage over the last 500 years.