Assertiveness in a crew setting can be defined as:

Assertiveness in a crew setting is defined as the readiness to state and maintain a position. This means that team members are encouraged to express their thoughts, opinions, and concerns clearly and confidently while maintaining respect for others. Being assertive does not imply being aggressive or dominant; rather, it involves open communication and standing firm in one's views when necessary. This quality is vital in a crew environment, as it promotes effective teamwork, enhances decision-making, and ensures that critical safety issues are addressed.

The other options reflect behaviors that do not align with assertiveness. Being passive in discussions diminishes a person's ability to contribute meaningfully, which can lead to misunderstandings and unresolved issues. Following authority's instructions without question may not always be appropriate, especially when safety concerns arise that might require thoughtful input or challenge. Avoiding conflict at all costs can stifle communication and prevent necessary discussions from taking place, ultimately harming the team's effectiveness. Therefore, the readiness to state and maintain a position encourages a healthy, proactive dialogue that is essential for optimal crew performance.