The answer is of course B - water.
Japan is consisted out of four big islands (Honshu, Hokkaido, Shikoku, and Kyushu). While each of them also has their own small characteristics, separate from each other, Japan has in general been isolated due to its specific geographical environment. Not being connected to any landmass such as neighbouring China, the only contact they could have had was by boat. And travelling by boat has always been more difficult compared to packing your stuff and going somewhere.
<span>Made the engine that made it possible for cars to work</span>
The answer to choose: A) Carter was instrumental in negotiating the Camp David Accords, which directly led to the 1979 Egypt-Israeli Peace Treaty.
Details:
Thanks to the persistent efforts of President Carter in working with Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin, those two leaers signed the Camp David Accords in September, 1978. That led to the 1979 peace treaty between Egypt and Israel that has lasted to the present day. Sadat and Begin were awarded the Nobel Peace Prize in 1978 for their efforts in reaching the agreement that they made.
As to the other answers:
The fact that Carter allowed the deposed shah of Iran to come into the USA for medical treatment did provoke the hostage seizure in Tehran. However, that was not a major <u>success</u> of Carter's foreign policy, but a major mistake. (His advisors had tried to tell him in advance that letting the shah come into the US was a bad idea.)
Similarly, the increase of tensions with the Soviet Union over the Olympics would not be an example of a success.
The federal law regarding cleaning up hazardous waste would be a success item, but one of <u>domestic</u> policy, not foreign policy.
<span>C: Japan was prepared to invade the US mainland</span>
Social Gospel reformers are differed from the early Christian reform movements by prioritizing social salvation over an individual salvation. The reason why they are wealthy, young, and educated is that, because they believe in laissez-fare capitalism's knowing that the labor as a commodity and it's unique reliance on a mechanism of supply and demand. They also supported the labor movement and called for an interventionist welfare state. Their ultimate vision is to have Christianized society.