After a Relaxing Week of Backpacking and Camping in the Woods,during

Multiple Choice

After a relaxing week of backpacking and camping in the woods,during which you enjoyed drinking cool water from a creek,you have returned to school.Since you got back,you are experiencing abdominal cramps that won't go away.This condition is probably not the result of schoolwork overload,but rather something you picked up during your camping trip.You likely have

A) malaria.
B) trichomoniasis.
C) giardiasis.
D) fungi.