Final answer:
Replication is the correct answer to the question about which element of research can help overcome generalization problems in a study, as it allows the study to be repeated to confirm the findings.
Step-by-step explanation:
Replication of research is a way of overcoming any problems of generalization that occur in a single study. Replication involves conducting the study again, possibly with different participants or in different settings, to verify whether the original findings can be applied more broadly to the general population. Random sampling is an element of a scientific study design that can aid in creating a representative sample of a population by giving all individuals an equal chance of being chosen for the study. However, while random sampling helps ensure external validity, it is replication that specifically addresses the issue of generalizability by demonstrating that results are not unique to a specific sample or situational variable.