Final answer:
Iago's suggestions include needing money and insinuating Desdemona's infidelity, but he does not advise taking her by force with the consequence of being hanged.
Step-by-step explanation:
Among the options provided regarding the character of Iago in Shakespeare's Othello, the statement that is NOT one of Iago's suggestions or comments is number 3: He says that Roderigo would be better to take Desdemona by force and be hanged than to follow his own course. Iago is manipulative and cunning, and while he does suggest the need for money and hints at Desdemona's potential infidelity, he never directly advises Roderigo to take Desdemona by force with the consequence of being hanged.