Final answer:
The audience learns that Scrooge was not a grumpy miser his entire life.
Step-by-step explanation:
The statement that most accurately summarizes what the audience learns about Scrooge after his four visions with the Ghost of Christmas Past is option 1) Scrooge was not a grumpy miser his entire life. Through his visions, Scrooge sees glimpses of his past when he was kinder and more generous. This helps him to reflect on his current behavior and prompts him to change his ways.