By derivation, the adverb highly (l. 52) is formed from the adjective high. The following sequence contains only adverbs formed by the same derivational process:
A. ally; powerfully; greatly; kindly; tenderly.
B. greatly; commonly; fastly; wonderfully; interestingly.
C. internationally; powerfully; unfortunately; mainly; fairly.
D. lovely; hardly; friendly; internationally; mainly.