Answer:
B. The elderly in the kingdom are holding
Explanation:
The speaker is saying that the elderly in the kingdom are so impressed by Prince Mamillius that they are holding on to life long enough to see him grow up. This suggests that the elderly are finding renewed hope and vitality in the young prince.
Supporting details:
Option A is incorrect because there is no evidence in the passage to suggest that Mamillius can reverse age.
Option C is incorrect because there is no evidence in the passage to suggest that a child caused a bunch of trouble.
Option D is incorrect because there is no evidence in the passage to suggest that the people made a child some crutches when he was born.
Conclusion:
Therefore, the correct answer is B. The elderly in the kingdom are holding on to life long enough to see Prince Mamillius grown.
I hope this helps!