Assuming the options are crowded out, rich flora, plunge pool, or flowing stream, the answer would be <u>crowded out</u>. This implies that there isn't enough room for something, a negative idea, whereas the others describe nature.
What are the instructions
You could say:
Drug use is bad for society because it ups the poverty rate, increases crime, and causes many people to overdose.
1. However
2. For example
3. As a result
4. Furthermore
5. Nevertheless
6. Whereas
(I hope this helped!)
