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

b.
through the water; modifies can swim

c.
can swim; modifies the blue shark

d.
through the water; modifies 25 miles per hour

the answer is irony!

comfortable

explanation:

one type of the adjectives is predicate adjective. a predicate adjective is an adjective which follows a linking verb and modifies or refers back to the main subject of that linking verb.

it usually is used just before the noun it modies.

here in this example:

'penguins seem comfortable in the coolest habitats', comfortable is the predicate adjective which follows the linking verb 'seem' and modifies the noun.