The answer is B. childcare.
Japan has had problem with it's low fertility rate for quite some time now. It's population is aging. More and more young people decide to not get married and live alone, as well as couples that live in the way of civil union and support each other, but do not have kids because it's too expensive and they can not focus on their work properly. So the Japanese government tries to stimulate the young people to have kids with the government-sponsored childcare.
