Answer :

The ability to read and write!

I hope this help!
Literary has 3 meanings:
Meaning 1: of or relating to or dealing with good literature
Meaning 2: knowledgeable about literature
Synonym: well-written
Meaning 3: appropriate to literature rather than everyday speech or writing.
Meaning 1 is most likely used. A synonym for meaning 1 is concerning books.
I hope this helps:)