Final answer:
Data fusion includes combining, resolving, and analyzing various data sources but making a hypothesis is not part of data fusion; it pertains to scientific research methodology.
Step-by-step explanation:
Data fusion involves the process of combining data from multiple sources, resolving conflicts between those data sources, eliminating duplicate data, and analyzing data to identify patterns and trends. Based on the student's question, which asks which fact is not an example of data fusion, options 1 through 4 are indeed components of data fusion. However, making a hypothesis is not directly related to data fusion—it is a component of scientific inquiry and experimentation. Therefore, the correct answer is option b - Making a hypothesis.