Question

a. van gogh used self - portraits to improve his type answer here and composition skills. b. self - portraits can be created using mirrors or cameras. c. today, selfies are a popular form of self - portraiture.

Explanation:

Van Gogh created numerous self-portraits primarily to practice and refine his painting techniques, specifically his ability to render facial features, use color, and master brushwork, alongside composition skills.

Answer:

a. Van Gogh used self-portraits to improve his painting (brushwork/color) and composition skills.