An Admin has created a new bundle, and a separate, unrelated Product Rule.

 Requirement:

Ensure a Product Rule fires only within a specific bundle.

 Solution:

Associating the Configuration Rule with the Parent Product ensures that the rule executes only during configuration of the specified bundle.

 Why Other Options Are Incorrect:

A, B, C: Associating the rule with Product records, Features, or Options does not scope the rule specifically to the parent bundle.

 Salesforce CPQ Reference:

Configuration Rules and their association with Parent Products are documented in CPQ Configuration Rule Guidelines ​.