What best illustrates the Politburo?

It was the ruling legislative assembly of Bosnia.

Saddam Hussein was the dictator.

Mikhail Gorbachev was the youngest ruling member.

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be the fourth option, which is missing from the list: the one having to do with the first Politburo being created by the the Bolshevik Party in 1917 as a way to promote leadership of the party.