Select the most appropriate meaning of the given Idiom:-

Bite off more than you can chew 

Not able to complete a task due to lack of ability

The most appropriate meaning of the idiom "bite off more than you can chew" is not able to complete a task due to lack of ability. The idiom comes from the image of a person who takes a bite of something that is too big for them to chew. In this sense, the idiom means to take on a task that is too difficult or challenging for you.

The other options are not as accurate descriptions of the meaning of the idiom. Habit of eating a lot and a chubby person are not related to the idiom "bite off more than you can chew." Ponder over something means to think deeply about something, which is not the same as not being able to complete a task.