The correct answer is the following.
The difficult task that Stalin most likely faced when he tried to use ethos in his speech was that he had to make himself seem trustworthy to his people despite he had starved and tortured many Soviets.
Let's remember what Ethos is. Ethos is the ethical appear in the discourse. You use Ethos when you want to convince an audience through your reputation, credibility or character.
Stalin had a difficult time using Ethos in his speech because he had to make himself seem trustworthy to his people despite he had starved and tortured many Soviets.
The other two elements are Pathos, the use of emotions to appeal to an audience, and Logos, the use of logic or reason to appeal to an audience.
