The correct answer is B. LOGO.
LOGO is a computer programming language that was designed for children and beginners. It is based on the turtle graphics metaphor, which means that users can control a turtle on the screen by typing commands. This makes it a fun and easy way to learn about programming concepts.
PROLOG is a logic programming language that is used for artificial intelligence applications. It is not based on graphics, and it is not typically used in education.
COBOL is a high-level programming language that was designed for business applications. It is not based on graphics, and it is not typically used in education.
BASIC is a general-purpose programming language that is often used for beginners. It is not based on graphics, but it can be used to create simple graphics programs.
Therefore, the correct answer is B. LOGO.