As a student of philosophy, the artist began to paint "metaphysical" works concerned with the nature of reality. a. piet mondrian b. gustav klimt c. pablo picasso d. giorgio de chirico

The answer would be C. Pablo Picasso. "Metaphysical" is another word for "Abstract". Picasso is quite famous for his abstract art. I hoped this had helped you.

franz marc (d) was an artist during the expressionist movement.