Melvin is an elementary-school teacher who rewards his students with extra playing time whenever they do well on a class assignment. in this scenario, which of the following techniques is melvin using to motivate his students to work harder?

a. observational learning
b. counterconditioning
c. insight learning
d. positive reinforcement

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "

answer; engram;