Why does health insurance become less expensive when the size of the insurance group increases? Question 25 options: Insurance is less risky to provide, more employees are contributing co-payments, the threat of high-risk individuals driving out low-risk ones is fewer employees are contributing co-payments, insurance is less risky to provide, administrative costs are lower Insurance is less risky to provide, the threat of high-risk individuals driving out low-risk ones is less, administrative costs are lower, more employees are contributing co-payments, the threat of high-risk individuals driving out low-risk ones is less