What is the origin of déjà vu, and what is its meaning?

the answer is B origin – french meaning – having already been through a certain situation

Deja vu is when your brain tries to understand the situation youre in by compairing it to other memories you have making it seem like you've done that something before.

Déjà vu, from French, literally "already seen", is the phenomenon of having the strong sensation that an event or experience currently being experienced has already been experienced in the past. Déjà vu is a feeling of familiarity, and déjà vécu (the feeling of having "already lived through" something) is a feeling of recollection

The answer is B origin – french meaning – having already been through a certain situation 

The origin of the word déjà vu is French and the meaning of the word is having already been through a certain situation. So for the given question the correct option is option "b". he word is actually derived from the French meaning that the person has already seen this situation before. It is not rare for a person to go through the same situation twice and
déjà vu is the perfect word for describing such unique situations. According to a survey conducted in the year 2004, two third of the people in the world has gone through déjà vu atleast once in their life time.