What is a key characteristic of methods and procedures TOs?

The answer is correct because methods and procedures Technical Orders (TOs) are designed to provide clear and generalized instructions that apply to a wide range of scenarios rather than focusing on specific equipment features or items. This characteristic enables personnel to understand and implement the procedures consistently across various contexts. The generalized nature of these instructions allows for flexibility and adaptability, ensuring that users can apply the guidance in situations that might not have been foreseen in detailed, equipment-specific manuals.

In contrast, options that suggest outlining unique equipment features or emphasizing maintenance schedules focus on specific aspects that do not align with the broader, more adaptable intent of methods and procedures TOs. Additionally, stating that they are not used for manuals implies a misunderstanding of technical orders, as TOs are indeed a type of manual that offers essential procedural guidance.