Answer:
You did a good job with that. However, I would change "results in ozone depletion" to "results in the depletion of ozone". This would catch the eye of readers.
I'd say C.) Will be time.
They have but this tends to be riskier if you are doing the same thing, this is why the average person follows the rules/systemwhich is a safer option. The people who bent the rules are also exceptions while the norm isn't. (I personally like to bend rules)