What do we call string in python 2?

The correct answer is A. str.

In Python 2, a string is a sequence of characters. It is represented by the type str. A string can be created using single or double quotes. For example, the following are all valid strings:

'Hello, world!'
"This is a string."

A string can also be created using the str() function. For example, the following code creates a string from the integer 123:

“`

str(123)
‘123’
“`

Strings can be manipulated using a variety of methods. For example, the len() method returns the length of a string, the upper() method returns a string with all uppercase letters, and the lower() method returns