Answer:
c) the states were to weak
The machines that were massed produced during the agricultural revolution
Answer:
Petroleum was used as fuel as early as the fourth century BC.
Explanation:
Answer:C)an antecedent
Explanation: Antecedent is preceding situation or event in which the human being tends to perform the learned behavior or nature. This type of behavior is used for the elimination of the pushing results/consequences by manipulation of the situation.
Other options are incorrect because extinction is the reduction of the something, secondary reinforcement refers to stimulus reinforce and shaping is structuring something according to the requirement .Thus the correct option is option(c).