Fill in the blank with the correct preposition.
Give an example relevant __________the case.

to

The correct preposition to fill in the blank is to. The preposition to is used to indicate direction or purpose. In this case, give an example relevant to the case, which means that the example should be relevant to the specific case that is being discussed.

The other options are incorrect.

• On is used to indicate location or position.
• For is used to indicate purpose or destination.
• With is used to indicate association or cooperation.