The correct answer is option 3, Afghanistan. Bagram Air Base is indeed located in Afghanistan. Bagram Air Base is one of the largest military bases operated by the United States in Afghanistan and has been an important base during the war in Afghanistan.

Option 1, Turkey, is incorrect. Bagram Air Base is not located in Turkey. Turkey is a separate country located in a different region.

Option 2, Pakistan, is also incorrect. Bagram Air Base is not located in Pakistan. Pakistan is another neighboring country of Afghanistan.

Option 4, Israel, is also incorrect. Bagram Air Base is not located in Israel. Israel is located in the Middle East, far from Afghanistan.

In conclusion, Bagram Air Base is located in Afghanistan. It is important to have knowledge about the geographical locations to correctly identify the location of military bases and other significant places.