The speaker is

Read the extract and answer Questions 36 to 40.

I will rather sue to be despised than to deceive so good a
commander with so slight, so drunken, and so indiscreet
an officer. Drunk! And speak parrot! And squabble!
swagger! Swear! And discourse fustian with one’s own
shadow! a thou invisible spirit of wine, if thou hast no
name to be known by, let us call thee devil!

(Act II, Scene Three, lines 262-267)

A. cassio
B. Iago
C. Duke
D. Roderigo

Correct Answer:

Option A = cassio