Oregon DPSST Security Professional Practice Test

Handcuffing someone is generally justified in situations where there is a clear and present threat to the safety of oneself, others, or the person being restrained. The choice "They use words indicating they may be violent" aligns with this principle. Verbal threats of violence can be considered a serious immediate threat, and thus trying to restrain the individual – if deemed necessary and proportionate in the given situation – may legally and ethically justify the use of handcuffs. It's important for security guards to always consider the proportionate response based on the level of threat and their own training.