Sociologists obtain their knowledge of human behavior through which result(s) in a body of information that us move beyond guesswork and common sense in understanding society.

Research.

Explanation:

Research may be defined as the study regarding the problem by using scientific methods. The inductive and deductive methods can be used in the research.

The knowledge of human behavior can be obtained through research. This helps the sociologist to move beyond the guesswork and increase in understanding the common sense in society.

Thus, the answer is research.