which of the following experiments involves the use of operant conditioning?

The experiment that involves the use of operant conditioning is the one where a child is rewarded for finishing his oatmeal mush, and the number of times the child needs to be rewarded before finishing voluntarily is counted. This is an example of operant conditioning because it involves modifying behavior through reinforcement—in this case, positive reinforcement by rewarding the child to increase the likelihood of finishing the oatmeal voluntarily. Other options such as blindfolding and timing estimation, observing fishing behavior, or pairing a puff of air with a color for blinking are not examples of operant conditioning. Operant conditioning focuses on voluntary behaviors shaped by rewards or punishments following the behavior.