Read the excerpt from Queen Elizabeth's Response to Parliament's Request That She Marry. For I assure you (what credit my assurance may have with you, I cannot tell, but what credit it shall deserve to have, the sequel shall declare) I will never in that matter conclude any thing that shall be prejudicial to the realm. For the weal, good and safety whereof, I will never shun to spend my life; and whomsoever it shall be my chance to light upon, I trust he shall be such, as shall be as careful for the realm as you; I will not say as myself, because I cannot so certainly determine of any other, but by my desire he shall be such as shall be as careful for the preservation of the realm and you, as myself.

In this excerpt, Queen Elizabeth says "for the weal, good and safety whereof, I will never shun to spend my life" in order to

convince her audience that she is unbiased, intelligent, and rarely makes mistakes.
inform her audience that she will work hard to win back the broken trust of her followers.
persuade her audience that she will never make personal decisions that will harm England.
remind her audience that she is the ruler and in charge of enacting laws that protect England.

Can you see my answer? I don't think is working.

Explanation:

persuade her audience that she will never make personal decisions that will harm England This is the correct answer

Queen Elizabeth explains to the Members of Parliament why she will not marry. She is determined not to make any personal decision in spite of the fact that the Parliament has asked her to marry. Queen Elizabeth says :" I will never in that matter conclude prejudicial to the realm". This means that she thinks marriage may not be good for the realm since she wants to spend her  whole time to take care of it :" For the weal, good and safety whereof, I will never shun to spend my life". She says that she will never abandon working for the wealth, the good and the safety of the realm."

These options are not right:

-in order to convince her audience that she is unbiased, intelligent, and rarely makes mistakes ( Not getting married is not taken as a mistake but as a personal decision).

-inform her audience that she will work hard to win back the broken trust of her followers.  ( Her trust is not the focus but her decision not to marry. Queen ELizabeth counts with her followers' trust).

-remind her audience that she is the ruler and in charge of enacting laws that protect England. ( The Queen is not talkking about her power but about a personal decision).