Final answer:
The correct answer is Option B, Knowledge-based authentication, which requires the user to provide specific knowledge such as a password or security answers that are assumed to be known only by the legitimate user.
Step-by-step explanation:
The form of authentication that depends on the supplicant proving that they know something only the true party should know is B) Knowledge-based authentication. This authentication method requires the user to provide some form of knowledge that would be difficult for others to acquire, such as a password, PIN, or answers to personal security questions. By contrast, biometric authentication relies on unique physical characteristics, token-based authentication uses a physical device, and multi-factor authentication combines two or more methods from different categories.
Knowledge-based authentication is a form of authentication that relies on the individual proving their identity by providing information that only the true party should know. This can include things like passwords, PINs, or answers to security questions. It is commonly used in online accounts and systems to verify a user's identity.