Final answer:
The sentence 'Fog is a kind of weather' does not contain a metaphor or a simile.
Step-by-step explanation:
Neither — the sentence does not contain a metaphor because it is a direct statement and does not make a comparison using 'like' or 'as'. It also does not contain a simile because it does not explicitly compare elements using 'like' or 'as'. Instead, it is a simple statement declaring that fog is a kind of weather.
Learn more about types of figurative language