In infants act on the environment, and stimuli that follow their behavior change the probability that the behavior will occur again.

The correct answer is operant conditioning.
This type of conditioning is controlled by consequences - meaning that, depending on the type of reinforcement/punishment, an individual will either repeat or stop doing something. For example, if a child wants to touch a stove, once it does that, it will burn its hand, and after that happens, it won't do it again. 

France played a key role in the american revolutionary war (american war of independence; 1775–1783). motivated by the ideals of the new nation which were inspired by the french enlightenment, as well as its long-term rivalry with britain and so as to avenge their territorial losses during the french and indian war, france secretly began sending supplies to the americans in 1775.