QUES: If your PC opens the OHC file but its the wrong application youll need to change your Windows registry file association settings In other words Windows is associating OHC file extensions with the wrong software program

correct the punctuation.

CORRECTED: If your PC opens the OHC file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating OHC file extensions with the wrong software program.

QUES: In 2010 she won the Reumert award for FROST by Danish Dance Theatre

correct the punctuation.

CORRECTED: In 2010 she won the Reumert award for FROST by Danish Dance Theatre.

QUES: Following a review of the status of indigenous peoples around the North Pole in the Arctic The Economist makes the conclusion that Greenlands Inuit are doing better than most

correct the punctuation.

CORRECTED:
Following a review of the status of indigenous peoples around the North Pole in the Arctic, The Economist makes the conclusion that Greenland's Inuit are doing better than most.