<span>Prostate cancer - Cancer of the prostate gland.</span>
Answer:
A. a partially disclosed principal.
Explanation:
In terms of a partially disclosed principal, the agent does not reveal about the identity of the principal. The agent reveals some information but not the complete one. In the above case, Gina discloses that she is buying the gift for some other person. This information is partially provided to Kelvin about the identity of the person. Hence, the principle here is partially disclosed to him.
Answer:
External Validity
Explanation:
Internal and External validity cogitate that whether or not the results of a study are meaningful. Internal validity is related to the structure of the study whereas external validity is related to how relevant is the findings of the study to the real world. Internal validity is a prerequisite to external validity, trade-off or tension between internal and external validity appear upon the analysis.