What output data type by the IBM Watson Natural Language Understanding service? 05/22/2020 – by Mod_GuideK 0 What output data type by the IBM Watson Natural Language Understanding service? A. DOCX B. PDF C. HTML D. JSON SHOW ANSWERSCorrect Answer: C Explanation/Reference: Reference: https://cloud.ibm.com/apidocs/natural-language-understanding Download Printable PDF. VALID exam to help you PASS.