The correct answer is: D. both (a) and (b)
A form designer includes field designators and prompts. Field designators are the labels that identify the data that needs to be entered into a form. Prompts are the instructions that tell the user what information needs to be entered into each field.
For example, a form for a customer order might include the following field designators:
- Customer name
- Customer address
- Customer phone number
- Customer email address
The form might also include the following prompts:
- Please enter your customer name.
- Please enter your customer address.
- Please enter your customer phone number.
- Please enter your customer email address.
Field designators and prompts are important because they help to ensure that the data that is entered into a form is accurate and complete.