Your answer is b hope it’s right
Two major quantitative research tools which are being used by sociologists would be graph theory - graph theory is a special area of mathematics which gets used in social network theory and is an interesting tool to use. Another are questionnaires which represent the bulk of sociologist empirical research.
<u>Answer</u>:
Instrumentation
<u>Explanation</u>:
Instrumentation internal validity threat:
<u><em>There are seven instruments internal threat are as follows:
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<u>Instrumentation</u>: It is very important for research that the instrument used for the research should be accurate in their measurement because its accuracy will be responsible for the outcomes of the study.