Correct Answer: Request

Solution : The correct choice is the fourth option.

The antonym of rejoinder is request . A rejoinder is a response or reply, while a request is asking for something.
The meanings of the other options are as follows:

• Expedite : To speed up the process or make something happen more quickly.
• Reply : A synonym for a rejoinder.
• Ordinary : Common or usual, unrelated to the idea of responding or replying.

Therefore, the correct answer is request.