Which role is specifically tasked with developing a new product or service?

The role that is specifically tasked with developing a new product or service is Product Development. This function focuses on the entire process of bringing a new product to market, including ideation, design, prototyping, testing, and finally launching the product or service. The individuals in this role utilize market research, consumer feedback, and design principles to create offerings that meet customer needs and fit within the company's strategic objectives.

In contrast, while Product Management is involved in overseeing product development, its main focus is to align the product strategy with business goals and manage the overall lifecycle of existing products rather than concentrating solely on the development aspect. Customer Support plays a vital role in assisting customers after a product is launched, providing them with help, and ensuring satisfaction, which is crucial but separate from the creation process. Account Management is focused on maintaining and nurturing customer relationships post-sale, ensuring that clients are satisfied and that their needs are met through existing products and services.

Therefore, Product Development is distinct in its primary responsibility for creating new offerings, making it the correct answer to the question.