A pigeon is reinforced with food every 30 seconds. As the 30-second mark nears, the pigeon can be seen getting more and more excited. The ability to "expect" the reinforcement illustrates the importance of in the conditioning process.

Cognition                    

Explanation:

Cognition: In psychology, the term "cognition" is described as a phenomenon that involves various mental processes that are being utilized by an individual in the process of gaining comprehension and knowledge. However, the process of cognition involves problem-solving, remembering, judging, thinking, and knowing. This is considered as "higher-level functions" associated with an individual's brain and includes planning, language, perception, and imagination.

In the question above, the given statement represents cognition.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.