Which is not a border of the Middle East?

The Middle East is a region of the world that is generally defined as being located in southwestern Asia and northeastern Africa. The borders of the Middle East are not clearly defined, but some of the countries that are often included in the region are Afghanistan, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Libya, Oman, Pakistan, Qatar, Saudi Arabia, Syria, Turkey, the United Arab Emirates, and Yemen.

None of the options provided are borders of the Middle East, so the answer is none.