1.
Your Answer is
Correct Answer is B
Explanation
Here to express "I was woken up by an unfamiliar snoring sound" using the form of was done. Awaken—awakened—awakened, awake—awoke—awoken, both words have the meaning of “waking up” or “being awakened”, but among the options, only awakened is the correct passive form, and there is no awoke option, so choose B.