Step-by-step explanation:
Daisy's presence at Gatsby's party has a significant impact on Nick's view of Gatsby and his dreams. Prior to Daisy's arrival, Nick is initially skeptical of Gatsby's wealth and his lavish parties, seeing them as superficial and lacking in substance. However, when Daisy arrives and reunites with Gatsby, Nick witnesses the intensity of their love and the extent to which Gatsby has been fixated on rekindling their relationship.
This moment of seeing Gatsby and Daisy together leads Nick to view Gatsby's pursuit of wealth and status as a means to an end - the end being his desire to win Daisy back. Nick sees the purity of Gatsby's love for Daisy and recognizes the extent to which Gatsby has built his entire life around his dream of being with her again.
In this way, Daisy's presence at Gatsby's party leads Nick to see Gatsby as more than just a frivolous and wealthy host; he sees him as a romantic idealist who is willing to go to great lengths to achieve his dreams. Daisy's presence also emphasizes the fleeting nature of the dream that Gatsby has built, as he ultimately cannot hold onto her or the life he has created. This realization contributes to Nick's overall disillusionment with the idea of the American Dream and the pursuit of wealth and status.