Select the most appropriate option to fill in the blank.

Our school had decided to take us to the Himalayas for excursion. I ____ to convince my mother to give consent.

left no stones unturned

The most appropriate option to fill in the blank is left no stones unturned.

The other options are not as appropriate because:

• Fought fire with fire means to respond to something with equal or greater force. This is not the most accurate description of trying to convince someone to do something.
• Brought home the bacon means to earn money or provide for one's family. This is not the most accurate description of trying to convince someone to do something.
• Made waves means to cause a disturbance or commotion. This is not the most accurate description of trying to convince someone to do something in a positive way.

Left no stones unturned means to have done everything possible to achieve a goal. This is the most accurate description of trying to convince someone to do something, because it shows that you have put in a lot of effort and thought into the matter.