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                              Q:
                           
                           
                                                      | A) shadows and highlights | B) direction and motion | 
| C) boundaries between forms | D) All of the above | 
                              Answer:   D) All of the above
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
Lines are used in art to indicate
a. boundaries between forms.
b. direction and motion.
c. shadows and highlights.
d. spatial depth on flat surfaces.

 
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