One possible reason why Iranian radicals took American hostages at the U. S. Embassy in 1979 was: the United States was allied with Iraq, the enemy of Iran America supported Israel in the Middle East the United States provided medical care for the Shah

One of the reasons why Iranian radicals took American hostages at the U. S. Embassy in 1979: the US government was providing medical care for the Shah and the iranians wanted to remove the existing iranian government, so it could not ally to the United States.

So, the correct answer is b)