What should Tyler's father have done to prevent the coverage termination?

To understand why removing Tyler from their family application before submission is the correct answer, it's important to recognize the procedures that govern eligibility and enrollment in health insurance plans through the Marketplace.

When a family applies for health coverage, they must accurately report the household composition and any dependency relationships. If Tyler was going to be excluded from the family's health insurance plan, then he should not have been included on the application. By removing him prior to submission, Tyler’s father would have effectively prevented potential issues related to coverage, such as confusion over eligibility or inconsistencies in reported household income.

This proactive approach ensures that the application aligns with Tyler's actual insurance needs and reduces the likelihood of termination of coverage due to misreported family members. While the other options could address issues after the fact, they do not prevent the initial problem from occurring.