Final answer:
The correct answer is Option C. The IETF (Internet Engineering Task Force) is responsible for specifying the standards for HTTP.
Step-by-step explanation:
The organization that specifies the standards for HTTP (Hypertext Transfer Protocol) is C. IETF (Internet Engineering Task Force). The IETF is a large open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and the smooth operation of the Internet. It is open to any interested individual. The IETF produces most of the documents that become the Internet standards, including the standards for protocols like HTTP. The other organizations listed, such as ISO, ITU-T, IEEE, and DoD have their own areas of specifications and standards, but for HTTP, it is the IETF that is responsible.