The second alternative is correct (B).
Traditional religions spread in a variety of ways, including the migration of religious people, the so-called missionaries. This is very common in Mormon and Catholic religion.
The other alternatives represent the opposite. Spreading the traditional religions means that people are not questioning the old traditions or changing their beliefs.
Open skies plan of President Eisenhower hopes to have a unilateral agreement on arms control between nations. Although Germany rejected the proposal believing such policy is an espionage technique, the rejection made clear that the Soviet Union has been indeed having arms preparations. It is further verified by an approved espionage plane of the US.
