Why is 4,4dimethyl hexane name is wrong

3,3-dimethyl hexane

Explanation:

                        CH3

         I     I     I     I     I    I

      - C - C - C - C - C - C-

         I     I     I     I     I    I

                        CH3

lithosphere and asthenosphere

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )