Answer: B) “the nameless grace/Which waves in every raven tress”
Step-by-step explanation: In the poem "She walks in Beauty" by Lord Byron, the author best expresses his appreciation of beauty in the lines: “the nameless grace/Which waves in every raven tress”, the first part of those lines "the nameless grace" is referring to an incredible beauty, and then, when he says "Which waves in every raven tress" he shows his recognition and appreciation for that beauty.