In Immutable.js, to apply a function to each item in a List and return a new List, you would use the ________ method.

In Immutable.js, to apply a function to each item in a List and return a new List with the results, you would use the map() method. The map() method creates a new List by applying the provided function to each element of the original List, allowing you to perform transformations on the data while maintaining immutability. This is a common operation when working with collections in Immutable.js, and it's a powerful tool for data manipulation.