Name the artist who painted this painting. what medium did the artist choose for this painting? what advantages and disadvantages might the artist have considered before using this medium?

This painting is by Mary Cassat. She chose to use oil paints. When Cassat chose to use oil paints, she most likely considered that oil paints are slow drying which can make them difficult to work with, but can also allow got mixing and blending of colors to created various affects. She also would have considered that oil paints are long-lasting and retain their vibrancy over time.