Which punctuation mark should be used in each sentence?

1. I do not like potatoes (. or, or; ) however, I love sweet potatoes.

2. Many people are confused by these punctuation marks (, or : or; ) the colon, the semicolon, and the hyphen.

3. After thinking about it for several days, I decided what I had to do (. or : or - ) I would apologize to Mrs. Potter.

4. The day went by in an orderly fashion (: or, or; ) there was no trouble from any of the students.