What is list comprehension?

List comprehension is a concise way to create lists in Python using a single line of code that combines an expression with a loop inside square brackets. This feature allows for the construction of lists in a more readable and expressive manner compared to traditional loops.

In a list comprehension, you can include a conditional statement to include only certain elements that meet specific criteria. For example, if you wanted to create a list of squares from a list of numbers, you could write it as follows: [x**2 for x in range(10)]. This creates a list of the squares of numbers from 0 to 9 in a single, succinct expression.

The other options reflect different data structures or operations in Python but do not relate specifically to list comprehension. The correct understanding of list comprehension highlights its role in simplifying the process of list creation and transformation.