Which event was most important causing Mama to get sick? __

A. Mama was emotionally exhausted from the trip to California and caring for the family.

B. Mama could not get over her cough, which then developed into a terrible headache.

C. Mama spent too many days working in the fields without proper food, water, and shelter.

D. Mama was trapped outside during the dust storm causing her to inhale dust in the lungs.