Final answer:
The correct answer to fill in the blank is 'c. Suspend', which means to temporarily revoke the driver's license due to failing the eye test.
Step-by-step explanation:
We had to suspend his driver's license because he failed the eye test. The correct answer is 'c. Suspend'.
Suspending a driver's license means temporarily revoking someone's privilege to drive. This action takes place due to various reasons such as failing an eye test, accumulating too many traffic violations, or other infractions that question the driver's ability to safely operate a vehicle.
Option 'a. Renew' implies extending the validity of the license, 'b. Reinstate' means to give back the license after suspension, and 'd. Nullify' would mean to make the license void or non-existent, which is more permanent than suspension.