What is the main function of signal words?

they readers predict the main ideas.
they suggest that the author is not an expert.
they alert the reader that the article is about to end.
they indicate that information is from a reliable source.

Which lines spoken by romeo in act iii, scene i of romeo and juliet best support the inference that romeo desires future peace between the montagues and capulets? check all that apply. abc romeo: tybalt, the reason that i have to love thee doth much excuse the appertaining rage to such a greeting; villain am i none, romeo: i do protest i never injur'd thee, but love thee better than thou canst devise, romeo: draw, benvolio; beat down their weapons, gentlemen, for shame, forbear this outrage! romeo: alive! in triumph! and mercutio slain! away to heaven, respective lenity, and fire-ey'd fury be my conduct now! romeo: this day's black fate on more days doth depend; this but begins the woe others must end.