CAN SOMEONE CHECKS THIS QUESTION TO SEE IF IM RIGHT THIS IS FOR A MAJOR GRADE!

Deborah has Cystic Fibrosis, a serious genetic defect that interferes with the body's ability to transfer salt and water to and from the body. The defect causes secretions in her body to be thick instead of the normal thin secretions in healthy people. These secretions clog her passageways which can be life-threatening. The following pedigree shows her family in which some individuals are affected by Cystic Fibrosis.


QUESTION: If Deborah marries a man unaffected by Cystic Fibrosis, which of the following describes the possibility that her daughter will be affected by Cystic Fibrosis?

ANWSER=25%