What is the primary program BS degree?

There's no single "primary" program for a Bachelor of Science (BS) degree. A BS is a degree type, not a specific program. Many, many different fields offer BS degrees, such as:

* Computer Science: A very popular choice.

* Engineering (various branches): Mechanical, Electrical, Chemical, Civil, etc.

* Biology: Often leads to careers in medicine, research, or conservation.

* Physics: Focuses on the fundamental laws of nature.

* Chemistry: Study of matter and its properties.

* Mathematics: A foundation for many scientific and technological fields.

* Nursing: A healthcare-focused degree.

And hundreds more! To know what the *primary* program is, you need to specify the field of study.