What is the correct way to create a tuple with one element?

To create a tuple with one element in Python, it is essential to include a comma after the element. This requirement distinguishes a tuple from other data structures like a number enclosed in parentheses, which Python interprets simply as that number.

In the correct option, the notation (1,) includes a comma, which tells Python that it is indeed a tuple with a single element. Without the comma, such as in the expression (1), Python would not recognize it as a tuple but rather as a grouping of the value 1.

The other choices do not create a tuple. The use of brackets in another option indicates a list, and the use of braces represents a set. Both lists and sets are different data types and do not convey the same characteristics as a tuple. Therefore, the presence of the comma in the correct option is crucial for defining a single-element tuple properly.