Final answer:
Louise Mallard's character undergoes transformation in the story through a combination of internal thoughts, external dialogue, and actions.
Step-by-step explanation:
Louise Mallard's character undergoes transformation in the story through a combination of internal thoughts, external dialogue, and actions. At the beginning of the story, she is portrayed as a woman confined by societal expectations and her marriage. However, when she learns of her husband's death, she experiences a mix of emotions and starts to feel a sense of liberation and freedom. This transformation is primarily conveyed through her internal thoughts, as we get glimpses of her changing feelings and desires, but it is also evident through her external dialogue with other characters and her actions, such as locking herself in her room and ultimately succumbing to a heart attack when she sees her husband alive.