Which of the following quotes spoken by Friar Lawrence shows the strongest example of how he advances the plot of the course of Romeo and Juliet?

a. "God pardon sin! wast thou with Rosaline?"
b. "Hence from Verona art thou banished; Be patient, for the world is broad and wide."
c. "Ah Juliet, I already know thy grief; it's strains me pass the compass of my wits; I hear thou must, and nothing may prorogue it, on Thursday next be married to this country."
d. "Take thou this vial, being then in bed, and this distilled liquor drink thou off."***

d. "Take thou this vial, being then in bed, and this distilled liquor drink thou off."