B is correct. It has all the correct punctuation and also everything is spelled correct.
This is very easy you should read over it again
For number four, you are correct. It was disease carrying mosquitos. That was why the colonists didn't have too many run-ins with the indians since the native american avoided the area for that very reason.
Number five is self-government which is where it is run by the people. So your answer would be Colonial Assembly.
The subject of the sentence "I read your blog post on the website" is "I". You can find the subject by asking yourself what is the person, place, or thing that is doing the 'doing' or is 'verbed'. Hope this helps! :)
