Education is the only option in the list which, if addressed properly, would lead to resolution or improvement of ALL the other options. How?
Educational level correlates with better awareness of one's health. If kids are taught from a young age to eat well in school (rather than left by the parents to just sit in front of the indoctrination box called the TV, watching endless advertisements for snacks and candy and fast food), we wouldn't be having an obesity and diabetes epidemic. Revitalize the school lunch programs, bring back mandatory physical education, and health education. Furthermore, educational level is a predictor of adult income levels, and the higher your income, the less you are forced to eat cheap processed fast foods as your main source of nutrition.
Education reduces crime and poverty rates, leading to less need for law enforcement, jails, and alleviates the overburdened court system. It also equalizes access to the legal system, which has become exorbitantly costly.
Education creates the engineers who build public works and infrastructure. With better education comes increased income and tax revenue, resulting in more monies to pay for such projects.
Education creates the scientists, mathematicians, engineers, and technologists who run the space program, but education among ALL citizens more crucially increases AWARENESS of the importance of the role of such people in building the economy for future generations. Even if you don't go into a STEM career, having more than a GED-level education will show you the value of such positions in society.
Education reduces the need for large military forces. Smarter people don't fight wars because they don't GET into wars. Wars are fought because the people who have a political and/or financial interest to create conflict and profit off it, incite war through strategic foreign policy decisions. They manipulate and foment paranoia and fear in the public, in order to achieve their goals. Afghanistan and Iraq are the product of decades of foreign policy masterminded by Big Oil, using various excuses such as anti-communism and anti-terrorism, to justify spilling blood for their own profit. If people were better educated, they would be less susceptible to believing the lies that their government feeds them.
Education brings about scientific literacy and critical thinking skills, again allowing people to resist propaganda from climate change deniers (who are, like the military example above, shills from big business interests who are solely focused on short-term profit and are happy to destroy the environment for centuries to come as long as it makes them rich in their lifetime). If you lack those critical thinking skills, you won't know how to formulate questions about the world around you in a scientific and objective manner, and you won't be able to understand why scientific reasoning is fundamentally superior to religious, dogmatic, or ideological reasoning.
The only reason why we have so many problems in this world is because too many people are too damn stupid to know they are being manipulated by those who are in power. And the reason they are stupid is because they are KEPT that way by those in power. The LAST thing the government wants to do is make its citizens smart enough to question its motives and hold them and their campaign backers accountable. All they need from the people is to make them smart enough to turn on their TVs to watch Fox News, and know how to tap a touchscreen voting machine--and that's only until they figure out a way to eliminate the need for them to vote at all.