Senatorial is an unwritten norm that allows a senator to block the governor's nomination of an individual who lives in the senator's district.

Courtesy, is the correct answer.

Explanation:

An informal, unofficial, unwritten political custom whereby all the nominations for the federal judicial posts at the state level are not approved if they are engaged by a senator from the state in which the appointee will work, is known as the Senatorial courtesy. This same concept is applicable to the courts of appeal when the state senator opposes the nominee.

using the scientific method.

answer; in small towns;