Which sentence is punctuated correctly?

Oscar Wilde once wrote, consistency is the last refuge of the unimaginative.
Oscar Wilde once wrote “Consistency is the last refuge of the unimaginative.”
Oscar Wilde once wrote, ‘Consistency is the last refuge of the unimaginative.’
Oscar Wilde once wrote, “Consistency is the last refuge of the unimaginative.”

Question

Which sentence is punctuated correctly?
 	
	Oscar Wilde once wrote, consistency is the last refuge of the unimaginative.
	Oscar Wilde once wrote “Consistency is the last refuge of the unimaginative.”
	Oscar Wilde once wrote, ‘Consistency is the last refuge of the unimaginative.’
	Oscar Wilde once wrote, “Consistency is the last refuge of the unimaginative.”

anonymous · Answer

the last one because he wrote it so it has to have "    " these to let you know that it was said. it also has to have a comma to show that there is a pause. think about it, you don't want to rush through it and it just isn't punctuated correctly without those. good luck :)