How many languages is it certain that Llull wrote in?
At least two
Only one
Five
Seven
Answer
As for the number of languages Llull wrote in, it is certain that he wrote in at least two: Catalan, his native language, and Latin, the universal language of the Middle Ages. There is some evidence that he may have also written in Arabic, but this is not certain.
The Llull-timate Challenge: Unraveling the Legacy of Ramon Llull