Foreign assignments can be highly disruptive to family members, and the resulting role ________ is the top reason that people quit overseas assignments.

A) autonomy
B) overload
C) underload
D) ambiguity
E) conflict

The word "disruptive" in the introductory sentence suggests that there could be conflicts arising from foreign assignments. The phrase "resulting role" further suggests that these conflicts could be related to family roles and responsibilities. Therefore, "conflict" is the most appropriate choice. Choices A, B, C, and D are all possible reasons for quitting overseas assignments, but they are not directly related to the disruption caused to family members.