Which of the following actions could lead to the cancellation of a health insurance policy?

Failing to pay premiums consistently is a fundamental reason for the cancellation of a health insurance policy. Health insurance operates on a contractual agreement between the insurer and the insured, where timely payment of premiums is a critical duty of the policyholder. If premiums are not paid, the insurer has the right to terminate the coverage due to breach of contract.

On the other hand, changing beneficiaries frequently, consulting alternate healthcare providers, or participating in health-related seminars does not typically impact the validity of the policy in such a direct manner. Changing beneficiaries is a standard feature of many insurance policies that allows policyholders to designate or update individuals who would receive benefits upon their death, and it usually does not affect the policy's status. Consulting alternate healthcare providers is a personal choice that policyholders make regarding their care and does not violate any contractual obligations. Likewise, participating in health-related seminars is generally encouraged as part of health awareness and self-improvement and does not pose any risk factor that would lead to policy cancellation.