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.
During the Industrial Revolution, inaction on behalf of the government to pass labor laws and protect the workers resulted in the formation of labor unions is a true statement. This was because there had been a history of worker exploitation, with laborers receiving extremely low wages, long working hours and unhealthy work conditions. People decided to take matters into their own hands, as the government was not helping.
Answer:
For your question, I'd say that it will be D. The citizens of Israel elect the members of the legislature, who then elect the prime minister while in Saudi Arabia, the chief executive is decided through the royal bloodline.
Have a good day, my fellow citizen! :D
Answer:
1 is boom, i think 2 is abolish, and 3 is most likely underground railroad
Explanation:
for number 2 - "The cotton boom and the resulting demand for slaves brought increased danger for northern free blacks: the possibility of being kidnapped and sold into slavery in the South ..".