There are 2 answers that fits the meaning of interest groups. It is letter b and c. Interest groups are also called pressure group. This are group of people or an organization that has the concers and trying to influence public policy in thier favor. They are concerns with various issues or problems that gave them hindrances to win control of the government. They pressure the policy makers by lobbying.
"B. The English Channel helped protect the island nation of Britain from invasion" would be the best option from the list, since this Channel was oftentimes very choppy with strong currents.
In "An Occurrence at Owl Creek Bridge," a Southern plantation owner named Peyton Farquhar is hanged during the American Civil War. At the moment of his death, he dreams that the rope breaks, allowing him to escape down the river and flee to safety. ... The end of the story reveals that the hanging was successful.
Germany had to join the league of nations.
Germany had to pay reparations, and in an attempt to pay them off, they mass produced money which lead to inflation and the German money becoming practically worthless.
Germany’s military was majorly downsized in order to prevent another war of arms from them.
Germany’s territories were given to other countries, causing its own territory to become smaller. This is a main reason for why the Germans were angered into causing WWII.
Hope this helps!