Answer:
Opposite to what has been said thus far, the answer is in fact C. They put too much stock in first impressions.
Explanation:
While they are at first too proud to admit they are wrong, they break free from this when Elizabeth acknowledges that she was too quick to judge Mr. Darcy over some minute details revealed in her first impression of him (Elizabeth disliked that Mr. Darcy refused to dance with anyone at their first ball together and Mr. Darcy judged Elizabeth due to her socioeconomic status) and Darcy comes to realize that Elizabeth is far more than her socioeconomic status, evidently so, as he admits that he loves and admires her ardently. (Also, I took the test)