How existing solutions can be made more effective.

Choose a problem that can be solved
Avoid the BIG issues – poverty, hunger, terrorism, etc. – as they require far more complex solutions than can be covered adequately in an essay of this length
Explore potential solutions to the problem
Avoid re-hashing solutions that are already in effect. The purpose of this essay is to propose new solutions or explain how existing solutions can be made more effective.
Decide on the most desirable solution(s)
Think about why your solution is the best one.