When the findings of research can be generalized to people beyond the immediate study, the investigation is said to have:

A) internal validity.
B) interrater reliability.
C) test-retest reliability.
D) external validity.

External Validity

The extent to which the results of a study can be generalized to other situations or to the population at large.

Interrater Reliability

A measure of how consistently different observers or raters assess, judge, or measure the same phenomenon, giving an indication of the reliability of ratings.

Internal Validity

Refers to the extent to which a study can establish a cause-and-effect relationship between its variables, free of confounding factors.