Which words in the sentence make up the adverb phrase? Which words do the adverb phrase modify?

The blue shark can swim up to 25 miles per hour through the water.

A.
can swim; modifies The blue shark

B.
through the water; modifies 25 miles per hour

C.
through the water; modifies can swim

D.
up to 25 miles per hour; modifies through the water

Question

Which words in the sentence make up the adverb phrase? Which words do the adverb phrase modify? 

The blue shark can swim up to 25 miles per hour through the water.
 
 A.
can swim; modifies The blue shark
 
 B.
through the water; modifies 25 miles per hour
 
 C.
through the water; modifies can swim
 
 D.
up to 25 miles per hour; modifies through the water

anonymous · Answer

C, I believe. Have they all been right so far, or can you not tell?

anonymous · Answer

thanks! and no, i can't tell if they're right until i submit it

anonymous · Answer

ok, that's fine, i was just wondering