Which action would NOT be classified as slander?

The correct action that would not be classified as slander is the act of writing a false claim in a blog. Slander specifically refers to making false spoken statements that damage a person's reputation. It involves verbal communication that occurs in a context where it can be heard by others, such as public speeches or conversations.

In contrast, when something is written, it is categorized as libel, which involves the publication of false information in a tangible form that can damage someone's reputation. Therefore, writing a false statement, regardless of the platform or medium, falls under the legal definition of libel rather than slander.

The other options described actions that could be classified as slander, as they involve verbal exchanges or spoken instances of damaging falsehoods, which meet the criteria for slanderous statements.