Handling an airline reservation or updating a computer account is known as which of the following?

The correct choice is "Business process." In the context of organizational activities, a business process refers to a series of tasks or activities that are structured and repeatable, aimed at achieving a specific business goal. Handling an airline reservation or updating a computer account involves a defined sequence of actions and interactions that are typically standardized and documented within the organization. These processes are critical to the overall functioning of the business, as they ensure consistency, efficiency, and quality in the delivery of services.

In contrast, a business task might refer to a smaller unit of work that contributes to a larger process but doesn't encompass the entire workflow. A business operation generally refers to the overall functioning and management of a company's activities rather than specific workflows. A business model outlines how a company creates, delivers, and captures value, focusing more on strategic aspects rather than the detailed activities involved in carrying out those strategies. Thus, "Business process" is the best fit for describing the activities involved in airline reservations or updating accounts, highlighting its role within the structured workflow of business operations.