* Florid wording refers to language that is elaborate, ornate, and often uses figurative language like metaphors and similes. This is a characteristic of traditional poetry, where poets aimed for beautiful and evocative language.
Let's look at why the other options are incorrect:
* (a) his use of slang: Slang is informal language and wouldn't be typical of traditional poetry.
* (b) his subject matter: Traditional poetry could cover a wide range of subjects, so this isn't specific enough to identify a traditional element.
* (c) his meter: While meter (the rhythm of the lines) is a characteristic of poetry, it's not unique to traditional poetry. Modern poetry also often uses meter.
Therefore, the most traditional aspect of Robert's poetry (assuming we're talking about a poet named Robert) is likely his use of florid wording.