According to your textbook, anything that is visible, tangible, and stable in form would be treated as a(n) in an informative speech.

The appropriate response is an object. For the motivations behind this kind of educational discourse, anything that is unmistakable and substantial is viewed as an object. Object talks look to confer information about this question the crowd. It's one thing to gush off actualities around an object, however, there must be a reason to those realities.