Lady of Shalott's tower is locared near Camelot, which is King Arthur's home, according to legends. This is the place where he lived with his wife Guinevere, and where he had meetings with his Knights of the Round Table.
Lady of Shalott was cursed so that she couldn't look at Camelot - once she did, she died.
Those sentence are using customary abbreviation for ''that is'' or ''id est'' and that is i.e. which is always written with full stop so the answer B) could not be correct.
When we are using a percentage, it is correct to write the numbers as it should and not with words, so the answer A) is not correct to.
Forty-three is correctly written and it should be written like that while other whole numbers could be written in a different way.
I believe some loneliness can be healthy but now that everyone is experiencing this it can be overwhelming. I recommend spending time with your family :)