Final answer:
The line from 'The Raven' that best exemplifies internal rhyme is 'Then, upon the velvet sinking, I betook myself to linking Fancy unto fancy, thinking what this ominous bird of yore', where the words 'linking' and 'thinking' rhyme within the same line.
Step-by-step explanation:
The internal rhyme in poetry is when two or more words within the same line of verse rhyme. Out of the options provided from Edgar Allan Poe's 'The Raven', the line that serves as the best example of internal rhyme is:
A) Then, upon the velvet sinking, I betook myself to linking
Fancy unto fancy, thinking what this ominous bird of yore
In this line, the internal rhyme occurs with the words 'linking' and 'thinking.' 'The Raven' is known for its use of internal rhyme along with a complex rhyme scheme and meter that contribute to its haunting rhythm and mood.