Final answer:
The statement is true; a str type literal is a sequence of characters enclosed by single or double quotes.
Step-by-step explanation:
True: A literal value of type str, or string, in programming languages is indeed a series of characters that are enclosed within either single quotes (' ') or double quotes (" "). This definition holds true for many programming languages like Python, Java, and JavaScript, among others. A string can include letters, digits, symbols, and whitespace characters such as spaces.
For example, in Python, both 'Hello' and "World" are valid string literals. Understanding string literals is essential for programming as they are commonly used to represent text data in code.