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

city commissioner and director of the cia.

bro these r easy u may have to do them urself bro. lol jk the answer is two for nimber one, and for question number two sahel boi xd have fun get rekt m8

c

explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long