In which sentence does the first word of the underlined noun clause function as an adverb?
A) Whoever would pitch in the game had a tough battle against the best hitters in the league.
B) The announcer let us know that the rain would force a cancellation of the game.
C) We were waiting to find out who was the starting pitcher.
D) Because of a rain delay, we did not know when the game would start.

D. Whoever would pitch in the game had a tough battle against the best hitters in the league.

Explanation:

The word "Whoever", is a noun clause that functions as an adverb. An adverb is a word used to modify a verb, an adjective, or another adverb.

that's conceptually impossible.

if i wrote it, it wouldn't be a 'shakespeare' sonnet.

the anwser is went creeping down the river again, across the wide lonely marshes to the sea.

i longed to go with them out into the world to seek my fortune in foreign lands—africa, india, china and peru!

and, dreaming of the lands i had never seen, i'd sit on there, watching till they were out of sight.