Why did the bay of pigs invasion take place, and with what results?

It was a covert CIA funded operation aimed at overthrowing communist regime in Cuba. The group made of mostly Cuban exiles was defeated by the Cuban Revolutionary Armed Forces.

The victory strengthened Fidel Castro's leadership and entrenched the perception of US as the enemy plotting against the communist revolution.

i believe the answer is d. it was not uncommon for people to faint or even convulse at these high-energy meetings.

d.prevent the spread of communism outside of eastern europe.