Which words in the sentence are the adverb clause?

the sky became very cloudy as though rain would fall any minute.

a. very cloudy
b. the sky became
c. would fall any minute
d. as though rain would fall any minute

yes this is an analog in my view

waves come crashing to grey sullen shores.

powerful and strong, it breathes and roars.

cascading and caressing each grain of sand,

a warm embrace between sea and land.

high above, a seagull soars high.

wings of purity it spreads to fly.

battling high against darkened cloud,

in a wind that blows fiercely, flying graceful and proud.

beneath, the sand is soft and warm.

sculpted by nature, it's weathered the storm.

a passionate battle between calmness and rage,

a new chapter's beginning; don't turn the last page.

i listen again to the whispering waves,

music of nature calming and brave.

its power unknown, its stillness untamed,

mysterious and magical, a treasure earth claims.

plz mark brainliest

explanation: