Final answer:
The author's opinion is that it is unfortunate if young people are swayed by celebrities' opinions.
Step-by-step explanation:
The best statement that sums up the author's opinion is option A: It is unfortunate if young people are swayed by celebrities' opinions.
The author portrays the idea of following popular trends, or getting on the bandwagon, as a negative thing, suggesting that young people should not be influenced by celebrities' opinions.
For example, the author states that celebrities' endorsements of politicians are viewed with cynicism, indicating a lack of support for the notion that celebrities should use their influence to sway public opinion.