Main clause <span> can stand alone as a sentence .</span>
There is some argument about who first invented ice cream. Some believe that ice cream was invented by the Chinese people anywhere from 2,000 to 6,000 years ago. They created a recipe of frozen milk and rice that was served as a dessert. Persia has also been credited with first serving frozen desserts. Over 2,000 years ago, the wealthy people of Persia enjoyed
The answer is
D.<span>The storm—it was the worst in years—caused several power outages.</span>
