A single-interest group is a group that is trying to push forward legislation and momentum around, well, a single-issue.
This might mean gun-control or reproductive rights.
They might have candidates in one party that they prefer but they are broadly trying to convince ALL candidates to believe what they believe.
So, B is the correct answer.
The Columbian Exchange has brought new species to Europe. This includes new plant species, such as tomatoes and potatoes which have help combat hunger in Europe. This can be seen for example through the fact that when potato has a blight it caused the great famine in Ireland. However, the Columbian Exchange was not only positive for Europe as it also introduced sicknesses such as syphilis.
The best way to handle this situation is to tell to the guest who is in a hurry that you won't be able to take his request as the top priority because there are others who are first in line before him. It would be best to advice him that his order would still be taken care of and would do it as fast as it can with trying to explain that he's not the only one in the restaurant to assure him and prevent conflict.
The correct answer to this open question is the following.
Unfortunately, you did not include the text. Without the text, we do not know what you are talking about.
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If you are talking about the Declaration of Independence of the United States, then, the social contract that the government gets its power from the people is mentioned in the following excerpt: <em>"That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, — That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government..."</em>
Enlightenment thinker Thomas Hobbes was one of the thinkers that talked about the social contract.
Other Enlightenment philosophers such as John Locke also wrote about popular sovereignty.
Baron of Montesquious and Jean-Jaques Rosseau were other thinkers that proposed interesting ideas about the form of governments and people's rights, that influenced further independence movements and revolutions.