The most generalizable findings are most likely to be found in a survey with

I believe the answer is: questionnaires that gather data analyzable using computers.

generalizable findings are the type of findings that is extracted from large number of sample population. It would be really expensive to gather such data using manpower alone, which is why the data collection process tend to be done using computers.

answer; the president uses mass media to gain support for policies;

answer; strength of association;