The screen will turn dark and the setting will be less bright.
I would say that D) Fair is foul and foul is fair - best illustrates Shakespeare's use of foreshadowing in Macbeth. It says what is going to happen - not all is what it seems.
An intransitive verb doesn't require a direct object. A cannot be correct because, Ian sharpened what? His hockey skates. So that is the direct object, therefore the verb is transitive. C and D are the same case.
The correct answer is B, because the verb is intransitive as it doesn't need an object. You cannot answer - Carla skates what? No, it is just Carla skates.
You are right but the 3rd one is b