The testing company has hired qualified people in the field to administer the new test bank to subjects of different ages and ethnic backgrounds. They need a sizable number of scores from inner city, urban, and country/small town subjects. Their goal is to gather sufficient data for test:

A. validity.
B. reliability.
C. performance.
D. standardization.

http://homepages.rpi.edu/~verwyc/Chap4btm.htm

The goal of gathering a sizable number of scores from subjects of different ages and ethnic backgrounds in various locations (inner city, urban, country/small town) is to ensure the test's:

D. standardization.

Explanation:

Standardization refers to the process of establishing consistent and uniform administration of a test to different groups of individuals. By collecting data from diverse populations, including individuals of different ages and ethnic backgrounds residing in different locations, the testing company aims to establish a standardized administration process. This helps ensure that the test is fair and unbiased across different groups of test-takers, offering consistent scoring and interpretations of the results. Standardization is an essential step in test development to enhance the reliability and validity of the test.