Select the most appropriate meaning of the highlighted idiom in the given sentence.
The anxious duke was found strolling in the garden to and fro.

Correct option is C

Option (c) is the correct meaning of the given idiom.
Given Idiom: To and fro means moving repeatedly back and forth, forward and backward. (Hindi idiom meaning: आगे-पीछे चलना या घूमना)
Example: The pendulum swings to and fro endlessly.
Other related idioms and their meanings:
· Back and forth: moving in one direction and then in the opposite direction.
· Ups and downs: good times and bad times.
· Round and round: moving in circles.