What is the common abbreviation for a Bachelor's degree?

The common abbreviation for a Bachelor's degree is "BA," which stands for "Bachelor of Arts." This designation refers to an undergraduate degree awarded in various fields of study, often associated with the humanities, social sciences, and liberal arts. A Bachelor's degree is typically the first level of higher education that students pursue after completing high school, and it usually requires around four years of full-time study.

The other abbreviations presented refer to different types of degrees: "AA" stands for "Associate of Arts," which is a two-year degree; "MA" denotes a "Master of Arts," which is a graduate degree obtained after earning a Bachelor's; and "PhD" signifies a "Doctor of Philosophy," which is a higher level of postgraduate education focused on research and scholarship. Understanding these distinctions reinforces why "BA" is the correct answer in this context, specifically indicating the degree level and type being asked about.