I believe the answer is C
Answer:
I don't understand what the question is here please be more specific in your question, please
Formal language is also called "proper language" because it is the type of language you would use when first meeting someone or giving a speech at a high class place so the correct answer is:
<span>B) Have I convinced you that the study of grammar is important and well worth your effort? </span>
The correct answer is letter <span>A. dedicated. </span><span>The question talks about the Unit 7 of Lesson 12
Unit Checkpoint: Life Stories, Part 1. It describes the scientists as </span>dedicated. Scientists are mostly dedicated to the things that they are doing because whatever the output of their experiments are later be used.