Correct Grammar
Each alternative should be grammatically correct within itself and in relationship to the stem. The wording of the alternatives should be parallel.
Poor
GRAPHIC
These four pictures show
A. heat and light
B. heating and sound
C. light and sound
D. sounds and coulorful
Better
GRAPHIC
These four pictures show
A. heat and light
B. heat and sound
C. light and sound
D. sound and coulor