[Reference:https://docs.splunk.com/Documentation/Splunk/8.2.3/Data/FormateventsforHTTPEventCollector, , When creating an HTTP event, the request header must include a token that identifies the HTTP Event Collector (HEC) endpoint. The token is a 32-character hexadecimal string that is generated when the HEC endpoint is created. The token is used to authenticate the request and route the event data to the correct index. Therefore, option B is the correct answer. References: Splunk Enterprise Certified Admin | Splunk, [About HTTP Event Collector - Splunk Documentation], , ]