Explanation:

Let’s break this down:

- Primary activities: Think farming, fishing, mining. It’s raw material stuff—real hands-on labor.

- Secondary activities: This is all about manufacturing. Factories, processing, turning raw stuff into goods.

- Quaternary activities: It’s brainwork—research, IT, consulting. Knowledge-based jobs, often tech-driven.

- Quinary activities: This is where “gold collar” comes in. These jobs are top decision-makers—CEOs, scientists, high-level government roles. Big-picture thinkers, making the crucial calls.

So, you picked Option 4—Quinary. .