Step 1: Understanding Arthur Anderson.
Arthur Andersen was a global accounting firm, known for providing auditing services to major corporations. It is now largely defunct after its involvement in the Enron scandal.
Step 2: Analyzing the options.
- (a) a scientist: Incorrect. Arthur Andersen was not a scientist.
- (b) An employment agency: Incorrect. Arthur Andersen was not an employment agency.
- (c) an accounting firm: Correct. Arthur Andersen was an accounting firm.
- (d) Philanthropist: Incorrect. Arthur Andersen was not a philanthropist.
Step 3: Conclusion.
The correct answer is (c), as Arthur Andersen was an accounting firm.