Which situation would undermine the validity of a consent-based search?

• A. Consent given by a person with authority to consent.
• B. Consent is voluntary.
• C. Consent obtained while the person was coerced with threats.
• D. Consent given in writing.

Answer: (C)

Voluntariness determines whether a consent-based search is valid. For consent to be lawful, it must be freely given by someone who has the authority to consent and without any pressure or coercion. When threats or coercion are used to obtain consent, the person isn’t truly agreeing on their own terms, so the consent is invalid and the search lacks proper basis.

That’s why the scenario where consent was obtained under threats undermines validity: coercion destroys the element of free agreement. Consent given by someone with authority is valid if it’s voluntary and not coerced, and written consent is simply a form of evidence that doesn’t by itself make consent valid or invalid.