Answer:
It might work better to stick with one metaphor.
Explanation:
The other options might come off as rude, but saying what this option says, won't come off as rude, and you would be able to get your point across too.
It is the third choice because it is a clause embedded in a sentence.
Answer:
A
Explanation:
it is the only one that reads correctly with the original meaning of the passage
I believe that the answer B. "The light rail is a good idea to reduce automobile traffic" :)