Question

what countries border korea? *
select all that are correct
□ china
□ japan
□ russia
□ all of the above

Explanation:

To determine which countries border Korea (the Korean Peninsula, including both North and South Korea), we analyze each option:

• China: Shares a land border with North Korea.
• Japan: Is separated from Korea by the Sea of Japan (East Sea) and does not share a land border.
• Russia: Shares a small land border with North Korea.
• "All of the Above" is incorrect because Japan does not border Korea.

So the correct options are the ones corresponding to China and Russia. But since we need to present the selected options as per the format (including identifiers and text):

Answer:

A. China, C. Russia