Which task might be suitable for moving into a separate function so you can re-use it from multiple places in your code?

The answer is "All of these could make good functions ".

Explanation:

In the given question some information is missing, that is options which can be described as follows:

a. Ask the user to confirm an input with a yes/no answer

b. Sort some input data into an ordered list

c. All of these could make good functions

d. Calculate a complex mathematical expression

A method is a collection of ordered code and provides a generic code, that is used to execute a single, connected operation.

A good function is a function, which takes values from the user and it will sort all the data and store in memory, and whenever we call the function, it will give the values. It is also used to calculate some complex values,