Final answer:
The character Joy from the movie Inside Out realizes that sadness can coexist with other emotions and enhances the appreciation of happy memories when she looks at the hockey memory.
Step-by-step explanation:
In the movie, Joy realizes sadness when she looks at the hockey memory and that sadness can coexist with other emotions and can even enhance the appreciation of happy memories. In the hockey memory, Sadness learns that when Riley's team lost a game, it was part of a bigger moment where Riley's friends and family supported her, ultimately resulting in a bond between them. This teaches Joy that sadness can have a positive impact on experiences, allowing individuals to connect and empathize with others.