The answer is the last one
Peers has two meanings:
1) verb: to look or gaze. For example: He peers at the puppy through the window. (that is, he looks at the puppy through the window)
2) noun: Individuals who are comparable on some given metric. For example: My peers and I met to discuss issues which impacted our lives.
Peer's refers to something belonging to a single peer (definition two above).
For example: I thought that my peer's sweater looked very nice on him.
Peers' refers to something belonging to a group of peers (definition two above). For example: As a group, my peers' achievements are very impressive!
So for your sentence on taking advice, I would assume that you would want
to use "peer's", because it refers to the advice which comes from a single peer.
The correct answer based on the given question above would be the third option. The model that suggests that our "self" has four aspects that control what we share with others is the "Johari Window Model". This model is a technique that aims to let people understand their relationship with themselves and with others. It was created by Joseph Luft and Harrington Ingham.
The answer to this is choice C.)
