Choose the correct meaning of the following idiom:

At logger heads

to be at strife

The correct answer is to be at strife. The idiom "at loggerheads" means to be in a state of strong disagreement or conflict. It is often used to describe two people or groups who are arguing or fighting. The idiom is thought to have originated from the practice of using a loggerhead, which is a heavy wooden club, to fight with.

The other options are incorrect. "In difficulty" means to be in a challenging situation. "Very happy together" means to be in a state of great contentment and happiness. "None of the above" is the correct answer if the idiom is not familiar to you.