Why was Commodore Perry sent to Japan?

The choices are:

1. He was sent as a representative to ease relations between the two countries.

2. Perry wanted to end the Boxer Rebellion.

3. He wanted to set up a trade agreement to increase U.S. exports.

4. Perry enforced the position of open access to waters near Japan for U.S. fisherman.

The answer is number 1 because he was sent to ease the relationship between Japan and the U.S. after Japan captured and imprisoned fishermen that were in their territory.