The correct answer is: B. List
A list is a data structure that stores a collection of items in a linear order. The items in a list can be any type of data, including numbers, strings, objects, and other lists. Lists are often used to store data that needs to be accessed in a specific order, such as a list of items in a shopping cart or a list of tasks to be completed.
An array is a data structure that stores a collection of items in a fixed order. The items in an array can be any type of data, including numbers, strings, objects, and other arrays. Arrays are often used to store data that needs to be accessed quickly, such as a list of numbers in a spreadsheet or a list of characters in a string.
A relation is a mathematical concept that describes a relationship between two sets of objects. In computer science, a relation is often used to represent a table of data. A relation can be represented in a variety of ways, including as a table, a set of ordered pairs, or a set of tuples.
A variable group is a group of variables that are related to each other. Variable groups are often used to organize variables in a program or to make it easier to access them.
In conclusion, the correct answer to the question “When you group together related variables, the group is referred to as . . . . . . . . ” is B. List.