What is the output of the following code snippet?

The provided answer indicates that the output of the code snippet is a tuple with a single element, formatted as tup(2,). This reflects a correct understanding of how tuples function in Python, particularly regarding the syntax for creating them.

To create a tuple with a single element, a comma is necessary to distinguish it from a regular expression within parentheses. For instance, tup(2,) creates a tuple containing the single integer 2. In contrast, simply writing tup(2) without the comma would not create a tuple but rather would attempt to evaluate the integer directly.

The other options do not align with the typical output formats for tuples in Python. For example, (4, 8) and (2, 4) suggest tuples with two integers, and (1, 2) also presents a tuple of two integers. These options would be the result of different operations or calls that would yield such collections of values, rather than a single-element tuple.

In summary, the answer correctly indicates that the output showcases a single-element tuple, which is formed using the syntax that includes a trailing comma for clarity.