Final answer:
Sales professionals, outside of marketing, frequently need to present marketing pitches as a core part of their job to persuade potential customers. Engineers also need strong communication skills, including the ability to make presentations and interact with customers. Therefore, the most appropriate option is C.
Step-by-step explanation:
In a career outside of traditional marketing, professionals that may need to present a marketing pitch include those in Sales, where the skill of selling a product or service is essential. In sales, individuals often need to convince others of the value of their offering, which involves elements of marketing to effectively communicate benefits and persuade potential customers. While teaching, medicine, and engineering are important professions, they do not typically involve marketing pitches to the same extent as sales does. However, engineers also need strong communication skills, but their focus is generally on making presentations, writing technical reports, and interacting with colleagues and customers rather than marketing products.