Answer:
D. User identity validation
Explanation:
User identity validation -
It refers to the security measure , which helps to verify any request made by the application or web chats from the authentic end users , is referred to as user identity validation .
This method is adapted in order to avoid any type of illegal action , malicious action , from any intervening , third party .
The process of Identity Verification is enabled in the android iOS , and web chat .
Hence , from the given scenario of the question,
The correct option is D. User identity validation .
