In Python, which operator is used for string concatenation?

The correct operator for string concatenation in Python is the plus sign. When you use the plus sign between two string values, it combines them into a single string. For example, if you have two strings, "Hello" and "World", using the plus operator like this:

greeting = "Hello" + " " + "World"

results in the string "Hello World". This operator is essential for merging strings and is commonly used in many programming tasks, such as building messages or creating complex string outputs.

The other options do not perform string concatenation. The minus sign is used for subtraction, the dot is not an operator but rather a way to access methods or attributes of an object, and the asterisk is used for multiplication. Understanding the roles of these operators is crucial for effective programming in Python.