What is Rule 2 focused on?

Answer: B — Responsibilities for all mariners to avoid collisions

Rule 2 of the COLREGs is specifically focused on the responsibilities of all mariners to avoid collisions. This rule emphasizes the importance of maintaining a safe navigational environment by highlighting that all vessels must take action to avoid situations that could lead to an accident. It underscores the principle that regardless of any specific rules, mariners are always obligated to exercise good seamanship and take necessary measures to prevent collisions whenever possible. This rule serves as a foundational guideline for safe navigation and provides a broad responsibility that applies to all vessels, regardless of their specific circumstances or the application of other rules. It is a reminder that safety is paramount and that adherence to good practices is essential in maritime operations.