Illustrators often use exaggerated proportions primarily for the following reasons:
B to give characters a defining feature that helps them stand out - Exaggerated proportions can make characters more memorable and easily recognizable, allowing them to convey specific traits or emotions effectively.
C because illustrations aren't supposed to be realistic - Many styles of illustration prioritize expressiveness and creativity over realism, using exaggerated features to enhance the storytelling or artistic impact of the piece.
While option A may apply in some contexts, it is not the primary reason illustrators use exaggerated proportions. Option D is incorrect, as many skilled illustrators can draw realistically but choose to use stylization for artistic purposes.
Overall, the most accurate answers would be B and C.