Which of the following factors is a requirement for the Chief Warrant Officer program?

In the context of the Chief Warrant Officer program, having a high school diploma is indeed a baseline requirement. This educational requirement ensures that all candidates have the fundamental educational background necessary for effective performance in the specialized roles they will undertake as warrant officers. While various additional qualifications and experiences, such as military service and recommendations, are important for advancing in the program and ensuring a candidate's readiness for leadership and technical roles, the high school diploma represents the minimum educational standard that must be met for eligibility.

Other options may convey significant aspects of qualification or may be relevant for other programs, but they do not reflect the specific baseline necessary for entry into the Chief Warrant Officer program.