What data type is created by the expression myPhone = (877, 435, 7948)?

The expression myPhone = (877, 435, 7948) creates a tuple because it is defined by the use of parentheses and contains a sequence of values. Tuples in Python are immutable, meaning that once they are created, their contents cannot be modified (i.e., you can't add, remove, or change items). This characteristic makes tuples suitable for storing fixed collections of items.

In this case, myPhone is intended to store a phone number, which typically consists of distinct components that shouldn't change, such as area code, central office code, and line number. Therefore, using a tuple is appropriate for this scenario.

Other data types mentioned do not match the characteristics of the tuple in this example. Lists, for instance, are mutable and defined by square brackets. Dictionaries use key-value pairs and are identified by curly braces containing pairs of keys and values. Sets are also defined by curly braces but do not allow duplicate values and are unordered collections. Hence, given the specific syntax and properties of the expression, it is clear that a tuple is the correct data type being utilized.