The correct answer is - A. industrialized.
Japan is one of the most advanced countries in the world in pretty much everything, including the industry, which has actually been the main power that has been leading the country forward in the past few decades.
Because Japan is such a highly developed industrial country, it is able to to import agricultural products from other places without any problem, and on top of it, it is not products just for their usage, but also for manufacturing and than selling them to other countries, thus making even more profit.
Japan has long been using its industrial power and advancements in it, thus always being one step in front of the others, and making themselves economically stronger and more superior.
