Joel Mendez profession and duty.

• A. Medical doctor and businessman; expected to understand all matters concerning his practice and business
• B. Lawyer; expected to rely on accountant
• C. Engineer; exempt from tax
• D. Teacher; not involved in taxes

Answer: (A)

Understanding tax obligations for someone who combines a professional service with a business is the key idea. When a person operates a medical practice and also runs a business, their income comes from two sources—professional earnings and business income—and each may have different tax rules, deductions, and reporting requirements. The expectation here is that such a taxpayer should have a solid grasp of what taxes apply, what records to keep, and what filings to submit, even if they enlist professional help.

The best choice describes a medical doctor who runs a practice and a business as being responsible for understanding all matters concerning his practice and business. That reflects the reality that, as a taxpayer, he must know the basics of taxation affecting both streams of income, ensure proper documentation, and comply with filing and payment obligations. The other options don’t fit: a lawyer who relies on an accountant downplays personal understanding of tax duties; an engineer isn’t generally exempt from tax; and a teacher isn’t exempt from taxes or automatically insulated from tax responsibilities.