Which of the following scenarios best illustrates the idea of blowback?
a. a country signs a treaty to obtain oil from its neighbor, resulting in both countries earning huge amounts of money.
b. a country assassinates a foreign leader, causing the leader's supporters to detonate bombs in the country's embassies.
c. a country demands that its citizens follow a particular religion, leading many citizens to practice a religion they did not choose.
d. a country invades one of its neighbors with a massive military force, allowing it to capture and occupy key cities.