What part of the three-branch test defines 'reasonable' under the Use of Force section?

The definition of 'reasonable' under the Use of Force section is captured by the terms "lawful, necessary, and proportionate." This triad aligns with the framework that officers must consider when assessing their use of force, ensuring that their actions are justified under legal standards.

'Lawful' indicates that the use of force must be within the boundaries of the law and follow established legal principles governing police conduct. 'Necessary' emphasizes that force should only be applied when it is essential to achieve a legitimate objective, such as protecting oneself or others from imminent harm. Lastly, 'proportionate' enforces the idea that the level of force used must correspond appropriately to the threat faced. This means that the response should not be excessive in relation to the circumstances prompting the use of force.

The other options fail to encapsulate the established language used in law enforcement training and the legal framework guiding the application of force, leading to their exclusion. This triad is critical for officers to make informed decisions in high-pressure situations, ensuring accountability and adherence to legal standards.