Margaret Bourke-White is best known for what? a. her photography in American National Parks
b. her work as a photographer during World War II
c. her contribution to the development of camera lenses
d. being the first female photographer in the United States

Acurious child asked his mother: “mommy, why are some of your hairs turning grey? ” the mother tried to use this occasion to teach her child: “it is because of you, dear. every bad action of yours will turn one of my hairs grey! ” the child replied innocently: “now i know why grandmother has only grey hairs on her head.”