c. Art is a creative expression of an idea in some form.
Explanation:
In general, art is a creative expression of an idea, viewpoint or emotion in any form that appeal to our senses, such as a visual form (for example, painting, architecture, drawing and photography), a written form (like novels, proses and poetry), an auditory form (like music), a performance form or a combination of them (like a comic which has both literature and visual elements).