Cross-examination could not elicit any reason for his being absent.

The correct answer is: D. extract

To elicit means to draw out or bring forth. In the context of the question, cross-examination could not draw out any reason for the person's absence.

The other options are incorrect because:

• Prove means to establish the truth of something.
• Find means to come upon or discover something.
• Produce means to create or make something.

I hope this helps! Let me know if you have any other questions.