Objectivity refers to the aspiration of science to correspond to the object that investigates, through procedures collectively accepted by scientists and on condition of avoiding the influence of subjective factors. It is an ideal difficult to practice and that has raised several objections.
So while objectivity is a social construction as well as impartiality and subjectivity. The option (B) desert, would be the best option since in none of the others it would be possible to develop objectivity and impartiality ... because in all of them the human being is compromised. Who still using the most rigorous scientific methods is always exposed to subjectivity. The reality is that prejudices are so anchored in people that no one is able to expel them from their determinations, even if they come into contradiction with reality. Therefore, only nature can unfold impartiality and objectivity because there is no emotionality that breaks through.