The correct answer is B. hateful.
The word “odious” means “extremely unpleasant or repulsive.” In the context of the question, the speaker is saying that the sentiments expressed in the speech were hateful. This could mean that the speaker found the speech to be offensive, bigoted, or prejudiced. It could also mean that the speaker found the speech to be cruel or sadistic.
The other options are not as accurate descriptions of the sentiments expressed in the speech. Option A, “significant,” is not accurate because the speaker is not saying that the sentiments expressed in the speech were important or noteworthy. Option C, “admirable,” is not accurate because the speaker is not saying that the sentiments expressed in the speech were praiseworthy or worthy of respect. Option D, “common,” is not accurate because the speaker is not saying that the sentiments expressed in the speech were widespread or frequently expressed.
In conclusion, the correct answer is B. hateful.