Answer:
d. Clarify that a BRCA1 mutation does not preferentially express ovarian cancer over breast cancer in any given family.
Step-by-step explanation:
When a faulty copy of BRCA1 is inherited in women it results to a 65 % probability of developing breast cancer at age 70 and 39% probability of ovarian cancer. Therefore, it will be necessary to clarify that a BRCA1 mutation does not preferentially express ovarian cancer over breast cancer in any given family.