Answer:
The correct answer is option b. asking for feedback about your interview performance.
Step-by-step explanation:
By requesting a feedback from your job interview, you may be able to improve the points where you have been weaker so that you can do better next time.
In no way can you think of giving up on the job search or direct your anger against the employer. You may not have the profile that the employer is looking for, but you could be perfect for another job, and any feedback that can help you improve would be helpful.
Therefore, the best response to a rejection message from an employer is asking for feedback about your interview performance.