What is true about all arguments used in array methods in Gosu?

In Gosu, when working with array methods, it is important to understand the nature of the arguments that these methods accept. The correct choice highlights that arguments must be a Gosu block expression. This is because many array methods, such as each, map, and filter, require a block of code that defines the operation to be applied to each element of the array.

A Gosu block allows the developer to write a piece of code that can be executed within the context of the array method. It is used to specify actions like manipulating each element or determining a condition for filtering or transforming elements. This is a fundamental aspect of functional programming, which offers greater flexibility and expressiveness when working with collections such as arrays.

The other options do not accurately reflect the requirements for arguments in array methods. While arguments in some contexts can be various data types, array methods specifically expect a block to enable operations on array elements. Therefore, understanding the requirement for a Gosu block expression is crucial for effectively utilizing array methods within Gosu.