The downfall of a tragic character is the result of
chance
a tragic flaw
the antagonist
poverty

The downfall of a tragic character is the result of "a tragic flaw".

The term hero is gotten from a Greek word that implies a man who faces affliction, or shows strength, despite risk. Nonetheless, at times he faces ruin too. At the point when a hero goes up against destruction, he is perceived as a tragic hero. Aristotle, the Greek philosopher, portrays these plays or stories, in which the principle character is a shocking saint, as disasters. Here, the hero goes up against his ruin whether because of destiny, or by his own oversight, or some other social reason.  

Hamartia refers to a tragic flaw that causes the downfall of a hero.

Option B

Explanation:

In almost all the literature forms specially in greek literature, a hero has always been a person who has rises against all the odds in his/her life. This special character faces affliction and usually shows strength instead of the risk involved in it. Some time this character undergoes complete down fall or he/she get ruined but this "hero" rise up again and stand strongly  against the destruction and thus is perceived as a tragic hero. Aristotle, has always portrayed in his writing "hero" as the main character who get ruined because of destiny or some social reason

Hence, option B is correct

d. the weight of the book