Final answer:
The correct answer is a. context diagram. It shows what activities the system is performing without specifying how, where, or by whom the activities are accomplished.
Step-by-step explanation:
The correct answer is a. context diagram.
A context diagram is a type of data flow diagram that shows what activities the system is performing without specifying how, where, or by whom the activities are accomplished. It provides a high-level overview of the system and its interactions with external entities.
For example, in a context diagram of an online shopping system, the activities performed by the system may include receiving orders, processing payments, and updating inventory. The context diagram does not show the internal details of these activities or the specific roles of the people or systems involved.