Final answer:
Sailors in the STA-21 program must attend a university offering Engineering and Technology programs, as this program aims to prepare them for technical and engineering roles as naval officers.
Step-by-step explanation:
A sailor selected for the STA-21 program is required to attend a university that offers programs related to Engineering and Technology. STA-21, which stands for Seaman to Admiral-21, is a commissioning program within the United States Navy that is designed to enable active-duty sailors to attend college full-time, leading to the completion of a bachelor's degree and commission as a naval officer. Therefore, among the mentioned options, the correct answer is A. Engineering and Technology. This program is tailored to meet the needs of the Navy in various technical and engineering capacities, and thus emphasizes areas of study within those fields.