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.
B. Sacrifice isn't necessary to achieve group goals.
The answer is "crosscutting cleavages
".
A cross-cutting cleavage happens when individuals that are on a similar cleavage, or division in the public arena (as per race, sexual orientation, ethnicity, geographic foundation, religion, and so on.), happen in various gatherings. A case of cross-cutting cleavage is that individuals from a similar ethnic gathering, (for example, Mexican-Americans) live in both the Northeast and the West in the United States.
Political researchers trust cross-slicing cleavages are a strategy to decrease strife in the public eye, as individuals from one gathering must join along various lines. At the end of the day, cross-cutting cleavages can enable individuals from various gatherings to cooperate to discover shared belief.
Answer:
1.impersonation is a form of cheating whereby a different person that the student assigned to the exam or test does it on his or her behalf .
"A. <span>Farmers made no profit of their own after paying off the land owner" is the best option from the list, although it should be noted that occasionally profits were made. </span>