Which of the following types are allowed for Python dictionary keys?Question 8Select one:a.dictionaryb.listc.list of dictionariesd.tuplee.All of the above

To determine which types are allowed for Python dictionary keys, we can refer to the Python documentation. According to the documentation, dictionary keys must be immutable objects.

Let's analyze each option:

a. dictionary: Dictionaries are not allowed as keys because they are mutable objects.

b. list: Lists are also not allowed as keys because they are mutable objects.

c. list of dictionaries: Similarly, a list of dictionaries is not allowed as a key because it contains mutable objects.

d. tuple: Tuples are allowed as keys because they are immutable objects. Therefore, this option is correct.

e. All of the above: This option is incorrect because dictionaries, lists, and lists of dictionaries are not allowed as keys.

Therefore, the correct answer is d. tuple.