Final answer:
Sponsoring Kiwanians are emphasized as the backbone of club functionality, providing essential support and continuity for Kiwanis clubs.
Step-by-step explanation:
The question "Kiwanians are the backbone of our clubs that keep them functioning. What is emphasized as the backbone of club functionality?" highlights the importance of Kiwanians as the main support system for the proper functioning of Kiwanis clubs. The correct answer is b) Sponsoring Kiwanians, as they are the ones often associated with providing stability, support, and continuity to the club's operations. Kiwanians are integral members who partake actively in club's governance, community service, fundraising, and maintaining membership engagement, hence, they are referred to as the backbone of the club. Unlike event planning committees, member attendance, or divisional leadership, which play significant roles, the sponsoring Kiwanians are specifically recognized as the foundational component in this context.