What Mark used to indicate a possessive or the omission of etters in word?

The mark used to indicate a possessive or the omission of letters in a word is the apostrophe (').

Here's how it works:

* Possessive: The apostrophe is used to show ownership. For example: "The dog's bone" or "John's car."

* Omission of letters: The apostrophe is used to represent missing letters in a word, typically in contractions or abbreviations. For example: "I'm" (I am), "don't" (do not), "it's" (it is), or "can't" (cannot).

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