Heads Up: I don't remember reading this article, but I'll do the best I can to help
Answer:
I'd say the answer is
Part 1. (D) Young people join the current environmentalist efforts
Part 2. (B) "Students across the planet who were concerned about climate change began making their voiced heard"
Answer:
I think it's an adjective phrase
Explanation:
idk just a gut feeling
The subject is the winning float
