Answer:
3) it is unlikely that most people thought about their local sewer system today although they relied on it.
Explanation:
Option 3 implies that everyone uses their local sewer system every day; however, most people don't give it much thought as they take it for granted. Therefore, this sentence best supports the central idea that Public Works are not fully appreciated.
The first one. You can’t split it into two complete sentences that make sense, only one does: “The museum is the Museum of Children’s Art.” “Which occupies a big, old house” doesn’t make sense as a sentence and is a dependent clause, therefore it is a complex sentence.
Answer:
Since you write an email to a cousin , your email will be informal.
you begin with "Dear Cousin,"
then say hi and ask about his news and tell him yours. (1st paragraph)
(2nd paragraph) You say you heard that he doesn't want to eat vegetables and how you received the news. You'll explain to him in a friemdly manner the benefits of vegetables and the consequences of not eating them. (staying healthy , his body is in need of vitamins for growth,,etc)
then you end your email by suggesting him to eat a different kind of vegetables or cook them differently or whatever and that you wish he would think again and change his mind about it.