Correct Answer: C - Implementing a load-shedding strategy is the most effective method to lessen user impact. It allows users to access alternative services or receive useful incident information while the issue is being resolved.

Incorrect Answers:

• A: Mass notifications can cause unnecessary panic and negatively affect user experience.
• B: Disabling non-critical features may confuse users and not address the incident's root cause.
• D: Deploying untested fixes in production is risky and could exacerbate the incident.