Here is the answer. Based on the given sentence above, the correct possessive noun would be "cat's" apostrophe s if the noun is singular, and "cats'", apostrophe only, if the noun is plural. Hope this answers your question. Have a great day ahead!
The protagonist of Things Fall Apart<span>, Okonkwo is also considered a tragic hero.
A tragic hero holds a position of power and prestige, chooses his course of action, possesses a tragic flaw, and gains awareness of circumstances that lead to his fall.
Okonkwo's tragic flaw is his fear of weakness and failure.</span>