Which statement about editing interfaces and expression rules is true?

Which statement about editing interfaces and expression rules is true?

• A. Interface components render for display when editing an expression rule.
• B. Editing an expression rule does not affect the rendering of interface components.
• C. You cannot edit expression rules in isolation.
• D. Expression rules cannot be edited.

Answer: (C)

Expression rules are reusable pieces of logic that interfaces rely on to compute values and drive rendering. Because their outputs depend on the data and context provided by the caller interface, changing an expression rule can change what an interface displays. These rules aren’t meant to be edited only “in a vacuum”; they’re designed to be edited as separate rule objects and then tested within the interfaces or contexts that use them. This is why editing expression rules in isolation isn’t a standalone, complete workflow—your changes must be validated in the calling context to see their true effect on the interface’s rendering. So the statement captures the idea that you don’t edit expression rules entirely in isolation, which is why it’s considered true. The other points don’t fit: editing an expression rule can affect rendering because interfaces rely on those rules for data and decisions, and expression rules can be edited (they’re not immutable).

Expression rules are reusable pieces of logic that interfaces rely on to compute values and drive rendering. Because their outputs depend on the data and context provided by the caller interface, changing an expression rule can change what an interface displays. These rules aren’t meant to be edited only “in a vacuum”; they’re designed to be edited as separate rule objects and then tested within the interfaces or contexts that use them. This is why editing expression rules in isolation isn’t a standalone, complete workflow—your changes must be validated in the calling context to see their true effect on the interface’s rendering.

So the statement captures the idea that you don’t edit expression rules entirely in isolation, which is why it’s considered true. The other points don’t fit: editing an expression rule can affect rendering because interfaces rely on those rules for data and decisions, and expression rules can be edited (they’re not immutable).