Question

Positive reinforcement _____ the likelihood that a behavior will be repeated. negative reinforcement _____ the likelihood that a behavior will be repeated.

Answer 1

The answer for that question is: increases ; increases
The positive behavior could increase the likelihood of the behavior by giving some sort of reward to someone if that person is doing a certain behavior.
The negative reinforcement could increase the likelihood of the behaviour by punishing that person if that person is NOT doing that certain behavior.
so in the end both reinforcements will increase the likelihood