Select the line that presents alliteration.

A. " ... Through day and night with the great clouds darkening ... "

B. " ... the great star early droop'd in the western sky ... "

C. " ... the silent sea of faces and the unbarred heads ... "

D. " ... amid these you journey,/with ... tolling bells ... "

An alliteration is a sequence of words that all begin with the same later, such as the tongue-twister "she sells sea-shells on the sea shore".

The only alliteration that I find here is "silent sea" - so the correct answer as C, even though alliterations more often include more than two words, as in this case.