Some of the moral issues explored in Chapter 3 of The Great Gatsby include:
* Irresponsibility: Gatsby's reckless driving leads to the death of Myrtle Wilson. This raises questions about Gatsby's sense of responsibility and his regard for the lives of others.
* Deceit: Gatsby initially lies to Nick about his involvement in the accident and allows George to believe that he is the one who killed Myrtle. This deception raises questions about Gatsby's honesty and integrity.
* Social Class: The accident highlights the stark contrast between the wealthy lives of the characters in East Egg and the harsh realities of life in the Valley of Ashes. This raises questions about the moral responsibilities of the wealthy towards those less fortunate.
* Love and Tragedy: The accident casts a tragic light on Gatsby's love for Daisy and his pursuit of the American Dream. This raises questions about the relationship between love, desire, and personal fulfillment.
Through the exploration of these moral issues, Chapter 3 adds complexity to Gatsby's character and deepens the novel's themes of wealth, class, and the pursuit of happiness.