The subjunctive mood is the best.
The subjunctive is rarely used in colloquial English. Totally irrelevant information, but... it is a relic from Latin, where there are many uses for a subjunctive. There is even a special conditional using the subjunctive mood that expresses the exact circumstances you described, which is usually called future less vivid.
I think your answer would be B, it points forward.
Answer: Problem-solving
Explanation: This kind of request is based on a solid understanding of danger that's been going on in the neighborhood.
Cleaning up litter is the key to cleaner streets, air and better surroundings for the children.
Better lighting is a way of getting rid of the drug dealers that are around since they wouldn't want to be around bright lights thus rather in darker streets.
Baseball became known as a major sport.
Hope this helps and major counts as an adjective because its describing something. :) Hope this helps! :)