Answer:
To summarize the action from the previous act and give an overview of what is to come.
Step-by-step explanation:
Romeo and Juliet is Shakespeare's tragicomedy (has element of tragedy as well as comedy).
Prologue of Act II serves two purposes. It first makes fun of Romeo for forgetting Rosalind so quickly and falling in passionate love with Juliet (summarizes the action of act i).
"Now old desire doth in his death-bed lie,
And young affection gapes to be his heir;
That fair for which love groan'd for and would die,
With tender Juliet match'd, is now not fair."
Next it foreshadows problems and obstacles which Romeo and Juliet would have to face in next Acts.
"And she as much in love, her means much less
To meet her new-beloved any where:
But passion lends them power, time means, to meet
Tempering extremities with extreme sweet."
Second and third options are not correct because prologues of Act II serves two functions (summarizes and foreshadows).
Fourth option is not correct because the prologue has no mention of Friar.