The correct answer is B) tax on imports.
The Japanese government has raised the tax on imports to ensure funds are available for the elderly.
The Japanese population is experiencing the fastest ratio of aging on Earth. Sociologists consider that by 2020, almost 30% of the Japanese population will be over 65years-old. This has a direct impact olan the money they are saving for their retire and the money available to pay their pensions when they do so. That is why the Japanese government has raised the tax on imports to ensure funds are available for the elderly.