The technique used for verifying the integrity of a message:AMessage DigestBDigital SignatureCAlgorithm encryptingDProtocolAnswer: A. Message Digest Read Explanation: Message Digest - The technique used for verifying the integrity of a messageDigital Signature - It is a technique used to verify the integrity and authenticity of a message.Algorithm encrypting - It refers to the process of encrypting data using an algorithm, but it does not specifically verify message integrity.Protocol - It is a set of rules governing communication, but it is not a technique for verifying message integrity. Read more in App