Answer D is correct.
In ACT-style Reading questions, it is just as crucial to eliminate bad answers as it is to choose the right answer.
A. Incorrect, this is just a restatement of a line in the text. It is not a central claim and does not answer the question.
B. Incorrect, this is an overly stretched interpretation of the excerpt. The paragraph only claims that civilized men are not of significantly better character than in days past, it does not say that nobles and kings deserved better living condition than men today.
C. Incorrect, this paragraph is not about being lazy. Also, "Men" does not specifically outline which group of men is being referred to.
D. Correct, this line summarizes the claim of the paragraph. The excerpt only means to say that technology and living quarters have evolved for men in the present time, but the character and quality of man has not improved.

Miles O.
Thanks for the addition! Very true about the importance of being able to know why you’re eliminating the wrong answers as well. Prevents the dreaded “which answer is the ‘most correct’?” guessing game in questions like this, haha09/05/24