Final answer:
Families that lack cohesion are characterized by weak family bonds, reflecting a lack of emotional connection and support among family members.
Step-by-step explanation:
A characteristic of families that lack cohesion is B) Weak family bonds. Cohesion in a family context refers to the emotional bonding and connections among family members. Families lacking cohesion may have members who feel detached or distant from one another, may not communicate effectively, and can experience conflicts without constructive resolution. Generally, there are fewer feelings of togetherness and support, which are critical to a strong, cohesive family unit. This lack of cohesion is often contrasted with families where there is a strong sense of unity and togetherness, frequent family gatherings, and well-defined family roles that contribute to a supportive family environment.