The answer is C
Calhoun claimed that the slave system was better than the “wage slavery” in the north. There is more on John C. Calhoun at www.historynet.com
If it's only regarding the invention of a specific dental equipment, it'll be to inform. the student is preparing to share their knowledge on the dental drill.
to persuade is usually the purpose when there's a question or an argument being raised, and in this case, it doesn't sound like anyone would be against dental drills. dental drills is also a fairly dry topic, so it's doubtful that the student would be aiming to entertain. it isn't a demonstration because the student likely isn't giving a step by step how to in regards to using a dental drill.
The gold standard is B) a system in which a country's money is backed with gold.
It is a monetary system where a country's currency or paper money has a value directly linked to gold.
Dragons are legendary creatures in Chinese mythology such add turtles and fish. But I can't find how many there actually are sorry
Experience. That's the answer because experiences make you scared, happy, excited, nervous... if your car crashed on an icy road, you would be scared to go on an icy road a second time because of past EXPERIENCE. Hopefully this helps!!
