The OED is not just a very large dictionary: it is also a historical dictionary, the most complete record of the English language ever assembled. It traces a word from its beginnings (which may be in Old or Middle English) to the present, showing the varied and changing ways in which it has been used and illustrating the changes with quotations which add to the historical and linguistic record. This can mean that the first sense shown is long obsolete, and that the modern use falls much later in the entry.
The third choice is correct.
I hope this helps! :)
Explanation:
It is something which you can do beyond your expectations it means to cross the boundary, it means to challenge yourself, it also means to go beyond your limitations
I would explain with an example: if you want to learn Japanese in 3 months and you do it in 1.5 month then you have challenge yourself and gone beyond your expectation and you have defeated your limitation .
Thank u!
