B. Sacrifice isn't necessary to achieve group goals.
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.
Martin Luther King Jr was an African American de-segregationist who was one of the important leaders of the anti-slavery and anti-segregation movement.
<h3>The Albany Movement</h3>
This refers to the anti segregation movement which began in Albany, Georgia in the year 1961 as they led a national movement to try and end all forms of discrimination.
Please note that your question is incomplete so I gave you a general overview so that you could get a better understanding of the concept.
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Answer:I need this ASAP as well !!
Explanation: