Select the most appropriate meaning of the given idiom.

Upper hand

To dominant, control

The correct answer is To dominant, control. The idiom "upper hand" means to have the advantage or control in a situation. It is often used in the context of a conflict or competition. For example, you might say "The company gained the upper hand in the negotiations."

The other options are incorrect. "To and fro" means to move back and forth. "Extreme failure" is the meaning of the idiom "an utter failure." "To be ready to fight with" is the meaning of the idiom "to be spoiling for a fight."