What is a primary reason for wearing a PFD while boating?

Wearing a Personal Flotation Device (PFD) is essential because it is designed to provide flotation and support in case of an emergency. The primary purpose of a PFD is to keep you buoyant if you fall overboard or capsize, significantly increasing your chances of survival in situations where you may find yourself submerged in water. A properly fitted PFD is crucial in providing thermal insulation and minimizing the risk of drowning, especially in cold waters or rough conditions.

The other options provided do not capture the life-saving function of PFDs. Fashion trends and sunburn are not relevant factors in the critical safety aspect of boating, while preventing unwanted movement in the boat speaks to comfort and control rather than the emergency flotation capabilities that PFDs offer. Thus, understanding that the primary reason to wear a PFD is to ensure safety and flotation in dire situations is vital for anyone participating in boating activities.