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Which of the following best describes the primary function of a digital signature in electronic communication?
Correct Answer: C — It verifies the identity of the sender and ensures the integrity of the message.
Explanation:
A digital signature is a cryptographic mechanism that acts as a virtual fingerprint, uniquely identifying the sender and ensuring the content has not been tampered with during transmission. It confirms the sender's identity and guarantees data integrity — making it an essential tool in secure electronic communication.