For group education sessions offered on a voluntary basis and without incentives, the participation rate will likely be _______.

In voluntary group education sessions that do not offer incentives, participation rates are typically between 5% and 35%. This range reflects the reality that individuals often prioritize other commitments over attending educational sessions when not compelled by incentives or requirements.

The lack of incentives can result in lower motivation, leading many people to abstain from participating. Those who do attend are often already interested in or concerned about the topic being discussed, which skews participation towards the lower end of the spectrum. This pattern is consistent across community health initiatives and educational outreach programs, where voluntary attendance tends to be limited.

Thus, the answer indicating a participation rate of 5–35% accurately captures the expected behavior of individuals when faced with voluntary group education without the added encouragement of incentives.