The man who is now Municipal Commissioner worked as ____________________.

Understanding Article Usage for Job Roles

This question focuses on choosing the grammatically correct phrase to describe someone's previous job. The person is currently a Municipal Commissioner, and we need to determine the best way to state their past role as a security guard.

Analyzing the Options

Let's examine each option based on the correct usage of articles ('a' and 'the'):

- Option 1: the security guard at a university Using "the security guard" implies a specific, known security guard. "at a university" refers to any university, not a specific one. This phrasing is slightly awkward for describing a job.*
- Option 2: a security guard at the university This option uses "a security guard," indicating one instance of this job title. "at the university" refers to a specific university that is understood in the context. This is the standard and natural way to describe holding a specific job at a particular institution.*
- Option 3: a security guard at university This is grammatically incorrect. The noun "university" typically requires an article (like 'a' or 'the') when referring to it as a place of work or study. Omitting the article here makes the sentence sound unnatural.*
- Option 4: the security guard at the university Similar to option 1, "the security guard" suggests a specific, singular guard. While "at the university" is correct for a specific place, "the security guard" is less common when describing a job title generally held by the person in the past unless they were the only guard.*

Choosing the Correct Phrasing

When describing a past job role, the most common and grammatically sound structure involves using the indefinite article "a" before the job title (if it's singular and countable) and the definite article "the" before the specific place of employment if it's a known or specific entity.

Therefore, the phrase "a security guard at the university" correctly and naturally describes the past employment of the individual who is now a Municipal Commissioner.

The correct answer explains that the person worked as a security guard at the university.