Iago wanted to seem like a good guy, so he wanted Othello to find out himself that Desdemona is cheating.
Answer:
placing a bet; hope this helps :)
B. VIOLIN
Lute, harpsichord, and cello are instruments that would likely be played for basso continuo in a Baroque musical piece.
Solo violin can be accompanied by Basso continuo.
Basso Continuo means "continuous bass". It is a form of musical accompaniment introduced during the Baroque period.
I believe that element is called
flying buttresses.
Flying buttresses support the walls of a building and given that they are quite slanted, they seem as if they are forming an arch with that particular wall they are leaned against. I've attached an image of them for you to see what I mean.