Select the most appropriate meaning of the given Idiom:-

Herculean task 

Extremely difficult task

The most appropriate meaning of the idiom "Herculean task" is extremely difficult task. The idiom comes from the Greek myth of Hercules, who was a demigod known for his strength and his ability to perform seemingly impossible tasks. In a figurative sense, to say that something is a "Herculean task" means that it is very difficult or challenging.

The other options are not as accurate descriptions of the meaning of the idiom. A powerful person is not typically associated with the idiom "Herculean task." Clandestine plan is not typically associated with the idiom "Herculean task." Full devotion is not typically associated with the idiom "Herculean task."