Answer:
Letter A.
Explanation:
What we can conclude from the excerpt given: First, that Romeo shows Juliet his intetion to kiss her, and she accepts.
<em>'...while my prayers’ effect I take. Thus from my lips, by thine, my sin is purg’d.'</em>
His 'sin' being to have asked the 'Saint to grant him Juliet's kiss.' - to which she replies <em>'Saints do not move, though grant for prayers’ sake.' </em>meaning that no saint can grant him her kiss for him (he must take it himself). Then he <em>purges his sin from his lips by hers. </em>(kisses her).
After kissing, she jests that her lips now have his sin, to which he replies that he wants his sin back (demands a new kiss) - This reveals that they have found in each other a suitable partner.