An adverb clause means that it has to be a full clause functioning like an adverb. This is the case in a): <span>Before you go to bed,
It's a clause (</span><span>"in our backyard garden| also has the function of an adverb but it's not a clause) and it's an adverb clause!</span>
Answer: She wonders why Robert's been avoiding her
Explanation:
Negros history and legacy.