An organization wants to securely transmit sensitive information between two parties.

The correct answer is C — Symmetric algorithm.

According to the WGU Cybersecurity Architecture and Engineering (KFO1 / D488) study material, symmetric encryption uses the same key for both encryption and decryption, offering high speed and lower computational overhead compared to asymmetric algorithms. This makes symmetric encryption ideal when both security and performance are important factors.

Block cipher (A) is a type of symmetric algorithm but not the broader category being asked. Hash functions (B) are for data integrity, not encryption/decryption. Asymmetric algorithms (D) are more secure for key exchange but have higher computational cost.

Reference Extract from Study Guide:

"Symmetric encryption algorithms use a single shared key for encryption and decryption, offering efficient and high-performance protection for sensitive data transmissions."

— WGU Cybersecurity Architecture and Engineering (KFO1 / D488), Cryptography Fundamentals

=============================================