Which is the best way to join sentences 18 and 19?
(18) Then he builds maps in his head. (19) He uses what
his hands tell him.
O A. Then he builds maps in his head he uses what his hands tell him.
B. Then he builds maps in his head if he uses what his hands tell
him.
C. Then he builds maps in his head using what his hands tell him.
D. Then he builds maps in his head; uses what his hands tell him.
