Final answer:
The correct abbreviation for 'never mind' in informal communication is 'nvm', which is widely recognized and used in texting and online chatting.
Step-by-step explanation:
The correct way to abbreviate 'never mind' in informal communication, such as texting or online chatting, is 'nvm'. This is a common shorthand used in digital communication to convey the message to dismiss the previous statement without needing a full explanation. Both 'nm' and 'nvm' are used, but 'nvm' more clearly represents the phrase 'never mind'. The options 'nvrm' and 'nverm' are not standard abbreviations for 'never mind' and are less commonly recognized.