Answer: Isabel
Explanation: it is a name of something
Answer: B. Quotes from a well-respected author
Explanation: an audience is a group of spectators at a public event; listeners or viewers collectively, as in attendance at a theater, speech, or concert. Before a formal audience, we should prepare a formal speech, which should be very correct and serious rather than relaxed and friendly, and usually doesn't have visual aids. From the given options, the only one that would be appropriate for a speech before a formal audience is to include quotes from a well-respected author.
Word choice...thesaurus gives alternative but same meaning for a word.
I'm pretty sure you should click the second bubble. That one looks like its correct. The other ones have wrongly placed commas so that's the only one that makes sense to me. Hope this helps! =^-^=
Good scientific writing is clear
it avoids unnecessary detail and simple
it uses direct language
avoiding vague or complicated sentences.