Iago wanted to seem like a good guy, so he wanted Othello to find out himself that Desdemona is cheating.
It is D I think. Hope I helped
Shading is showing the objects' roundness or shape; shade is the blocking of a light source; and shadow is the variation between black and white with the darkest part at the center and the 'shadow' fades at the edges.
Niceeeee :D Is it original or like someone else’s song