His logic . . . . . . . . everyone, including the experts.

The correct answer is: D. confounded

His logic confounded everyone, including the experts. This means that his logic was so complex and difficult to understand that it confused even the most intelligent people.

The other options are not as accurate.

• Teased: His logic did not tease anyone.
• Defied: His logic did not defy anyone.
• Surprised: His logic surprised everyone, but it did not just surprise them. It also confounded them.
• Overwhelmed: His logic was complex and difficult to understand, but it did not overwhelm anyone.

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