The answer is not A, because it is not clear enough. Who's we?
The answer is not B, the sentence is not clear about the building they are visiting.
The answer is not C, it's not clear about what building they are talking about.
So your answer is D.
Answer: its means teach them something
Explanation:maybe they did something to u so u teach them a lesson which is the same as stick a label under someones body
It shows that a Muslim invention benefited European society.
