Choose the correct spelling to complete the sentence: "We didn't know the weather would change."
- wether
- weather
- whether (correct answer)
- wheather
Explanation: The sentence needs the word that means "if," which is spelled "whether." Choice C is correct. "Wether" (Choice A) is a rare word for a sheep, "weather" (Choice B) is about rain and sun, and "wheather" (Choice D) is not a real word, so none is the right spelling here.