Which explains the decline of Japan’s isolationism?

Limited natural resources on the islands of Japan led to the end of isolationism and allowed for the rise of Japanese industrialization.
The elimination of isolationist policies in Japan was caused by the need to raise money through tariffs on imports.
Fearing an invasion by Russia, Japanese leaders eliminated isolationism as a foreign policy so they could seek assistance from China.
Western cultures forced treaties on Japan that would open its ports and end its imposed trade limitations and isolationism.

D?

Ms. Sue... with all due respect do you give wrong answers on purpose or something

No.

https://www.jiskha.com/questions/1703443/What-explains-the-decline-of-Japans-isolationism-Limited-natural-resources-on-the

but people said they got it wrong

Yes, A.

Yes, option D is the correct explanation for the decline of Japan's isolationism. Western cultures forced treaties on Japan that opened its ports and ended its imposed trade limitations and isolationism. This process, known as the "Opening of Japan," occurred in the mid-19th century, when several Western powers, particularly the United States, forced Japan to end its policy of isolation and engage in trade with the outside world. This led to the decline of Japan's isolationism and the subsequent modernization and industrialization of the country.

You can solve this dilemma by reading your text carefully.