All of the following factors influence the underwriting of group health insurance for an association...

Detailed Answer in Step-by-Step Solution:

Group health underwriting considers average age (A), claims history (B), and occupation type (D) to assess risk, but marital status (C) is typically irrelevant for group policies, unlike individual underwriting.

The Virginia study guide notes that group underwriting focuses on collective risk factors like age, claims experience, and occupation, not personal details like marital status. Reference: Virginia Life, Annuities, and Health Insurance study guide, section on "Group Insurance Underwriting."