The answer for this question is C. The Domino Theory. This theory states that if a country came under communist rule, its neighboring countries and regions would follow as well. This theory is what the US used as a reason to intervene in the different affairs of various countries to stop or prevent communism from spreading.
I believe the answer is Inference.
In creating an inference, you need to find a reliable source to obtain a certain amount of data and information.
After that, you need to process that data/information with your personal knowledge and deductive reasoning in order to create a conclusion
