I believe it is A due to "The lady made detailed plans, engaged the caterer and the orchestra well in advance" isn't exactly connect well and be hard to understand so you'd put a comma between "caterer, and".
You should annotate the text while your reading it
Answer:
The tour guide, who has become a good friend, is great!
Explanation:
The commas help separate the two ideas in one sentence correctly. A good way to check that this is correct is to remove the words separated by the commas - "who has become a good friend" - and check if the sentence still makes sense. In this case it would be "The tour guide is great!" which makes sense as a sentence. Thus, this version of the sentence is correct.
Answer: It has factual information and has words like nebular hypothesis and volume and temperature.
Explanation:
Answer:
She would like to serve the Countess Olivia, who is also mourning for a brother, but learns that she will not accept visitors. Instead Viola disguises herself as a boy and goes to work as a servant to Orsino. Calling herself Cesario, Viola makes a good impression on the Duke who sends her to woo Olivia on his behalf.
Explanation: