Although the REST API supports a wide variety of data formats for communications and exchange, which data formats are the most commonly used? 

Answer options:

A. SAML and HTML
B. XML and SAML
C. XML and JSON
D. JSON and SAML

C

JavaScript Object Notation (JSON) and Extensible Markup Language (XML) are the most commonly used data formats for the Representational State Transfer (REST) API and are typically implemented with caching for increased scalability and performance. Extensible Markup Language (XML) and Security Assertion Markup Language (SAML) are both standards for exchanging encoded data between two parties, with XML being for more general use and SAML focused on authentication and authorization data. HTML is used for authoring web pages for consumption by web browsers