"Doubt About the Applicability of Research Findings Arising from Features

Multiple Choice

"Doubt about the applicability of research findings arising from features of the research procedure.Generally speaking, this uncertainty is difficult to quantify but it can be minimized by appropriate research practice." What is this a glossary definition of?

A) Inferential uncertainty.
B) Internal uncertainty.
C) Statistical uncertanty.
D) Methodological uncertainty
E) Procedural uncertainty.