The favorite subjects of Mary Cassatt were ______.

a. men and boys shown in unguarded moments
b. women and children shown in unguarded moments
c. the city life in Paris
d. all of these are correct
e. none of these are correct

b. women and children shown in unguarded moments

a. Incorrect. Men and boys in unguarded moments was not a favorite subject matter for Cassatt.
b. Correct. Women and children shown in unguarded moments was a favorite subject matter for Cassatt.
c. Incorrect. Cassatt did not frequently paint Parisian city life.
d. Incorrect. Women and children shown in unguarded moments was a favorite subject matter for Cassatt.
e. Incorrect. Women and children shown in unguarded moments was a favorite subject matter for Cassatt.