Which of the following sentences is punctuated correctly?
A. Although the town appears strikingly dull; most folks say its a nice place to live.
B. Although the town appears strikingly dull, most folks say it's a nice place to live.
C. Although the town appears strikingly dull most folks say it's a nice place to live.
D. Although the town appears strikingly dull, most folks say its a nice place to live.
B is punctuated correctly because it uses the comma correctly to separate the introductory clause from the main clause.
Therefore, the Correct Answer is B.