To indicate whether an attribute is required, you add the ____ attribute to the element declaration or reference.
A) optional
B) require
C) use
D) attach

Question

Quizplus · Accepted Answer

The correct choice is "use" as it indicates whether an attribute is required or optional. Specifically, the use attribute can take three values: "required" to indicate that the attribute is required, "optional" to indicate that it is optional, and "prohibited" to indicate that it cannot be used. The other choices (optional, require, and attach) are not valid attributes for indicating whether an attribute is required.

To Indicate Whether an Attribute Is Required, You Add the ____