Final answer:
To become a Certified Public Accountant, a four-year Bachelor of Arts degree and additional credits are required, often equating to a master's level education, in addition to passing the CPA exam. For a career as a psychology professor at a 4-year college, a PhD in psychology is typically necessary.
Step-by-step explanation:
The career in the financial industry that requires a minimum of a four-year college Bachelor of Arts degree is a Certified Public Accountant (CPA). In fact, to become a CPA, one often needs not only a bachelor's degree but also additional credits that may equate to a master's degree, as well as passing the CPA exam. While a banker or analyst may also have a four-year degree in finance, economics, or a related field, it is not strictly required as in the case of a CPA. A realtor typically requires a state license, which may not necessitate a four-year degree.
Focusing on the example provided regarding the education requirements to become a psychology professor at a 4-year college, a PhD would likely be necessary. Colleges and universities typically require their faculty to have a doctoral degree in the field that they will be teaching, which signifies a high level of expertise and the ability to conduct independent research.