The answer is for
Hope this helps
Four things to do while proofreading are to check your spelling, grammar, punctuation, and capitalization.
Your question isn't very detailed, if this isn't what you're looking for, please feel free to put in more detail.
THE ANSWER IS THAT (RELATIONSHIPS NEED MAINTENANCE) JUST LIKE CARS DO :)
Number 2 is a simple sentence
3 is a compound sentence because it had And inside it
1 is a complex sentence I think
4 is A
5 is B
6 is C
7 is A
