Both! I would think more so different minded people, because if we all think the same, we would all miss good and creative ideas to improve. But with different people, you also run into the issue of disagreeing. I hope this helps!
I would say the one least likely to cause outdoor environment contamination is going to be D, fertilizers.
Fertilizers are meant to help the environment, not damage it.
A. Repetition would make the most sense since to draw attention she should clarify it or reiterate it multiple times.
