In which sentence is the underlined clause an adverb clause?

Braille is a form of writing that enables blind people to read and write using bumps on paper that represent letters.
Louis Braille, who invented a way for blind people to read and write, taught his system to classmates.
You might encounter the writing system of Braille wherever there are signs or maps.

Question

In which sentence is the underlined clause an adverb clause?
 	
	Braille is a form of writing that enables blind people to read and write using bumps on paper that represent letters.
	Louis Braille, who invented a way for blind people to read and write, taught his system to classmates.
	You might encounter the writing system of Braille wherever there are signs or maps.

anonymous · Answer

Hi @mani01121997, Welcome to Openstudy!

I think it will be easier for us to help you if you also tell us which are the underlined clauses on your choices :)