Final answer:
Web Service Standards focus on non-functional requirements, ensuring interoperability between various web services through protocols like SOAP and REST.
Step-by-step explanation:
Web Service Standards primarily address c. Non-Functional Requirement. These standards, which include protocols like SOAP, WSDL, UDDI, and REST, define the technical specifications that ensure interoperability between diverse web services. They cover aspects such as security, transaction management, and messaging patterns, which are non-functional requirements because they dictate how the system operates rather than what operations it performs. Functional requirements would be related to the specific tasks or functions the web service is expected to perform, which are not covered by these standards. Design and deployment are stages in the development process and also do not specifically pertain to web service standards.