Final answer:
In Part 3 of Finding Chika, Mitch Albom doesn't directly state the lesson related to the provided options. Nonetheless, the reference to Aristotle's perspective on friendship suggests the importance of deep, genuine friendships for a happy and virtuous life. Therefore, the closest answer to the primary lesson would likely be the importance of friendship.
Step-by-step explanation:
The primary lesson that Mitch Albom identifies in Part 3 of Finding Chika is not directly listed in the options provided by the prompt. However, based on the reference to Aristotle and his discussion on friendship in Nicomachean Ethics, where he emphasizes the vital role of friendship in a fulfilled and happy life, it can be inferred that the lesson closest to the core of Albom's message might align with the importance of friendship (a). Aristotle outlines that a happy man should certainly have friends, who are the greatest of external goods, suggesting that genuine friendships contribute to our happiness and virtuous development.
Aristotle makes a distinction between different types of friendships, with incidental friendships based on utility or pleasure being superficial and transient. These types of relationships do not contribute to our overall happiness nor to our moral and virtuous development. In contrast, perfect friendships are profound and contribute greatly to a fulfilling life.