The Security Assertion Markup Language (SAML) is the most widely used method for encoding and sending attributes and other information from an identity provider to a relying party.WS- Federation, which is used by Active Directory Federation Services (ADFS), is the second most used method for sending information to a relying party, but it is not a better choice than SAML.
XML is similar to SAML in the way it encodes and labels data, but it does not have all of the required extensions that SAML does. HTML is not used within federated systems at all.

Explanation/Reference:
Explanation:
DNSSEC does not require any additional DNS queries to be performed. The DNSSEC integrity checks and validations are all performed as part of the single DNS lookup resolution.

The question is describing the Platform as a Service (PaaS) cloud offering, and as such, structured and unstructured storage types will be available to the customer. Volume and object are storage types associated with IaaS, and although the other answers present similar-sounding storage types, they are a mix of real and fake names.