For number 3 your answer look the best
and 4) i would choose slender
hope i could help ^_^
First you need to figure out what the author wants you to figure out or do while reading the passage . take note of the first reason or the main reason, of what they want you to do and write down evidence to support his/her conclusion. write down every other reasons, and lastly underline the most important reasons.
Answer is A because it flows the best