Explanation:

A high-level programming language is designed to be user-friendly and abstract away the complexities of computer hardware, allowing programmers to write code using more human-readable syntax. Let's evaluate each option: (a) 'COBOL' (Common Business-Oriented Language) is a high-level programming language primarily used for business, finance, and administrative systems. (b) 'PASCAL' is a high-level, imperative, and procedural programming language, influential in teaching structured programming. (c) 'BASIC' (Beginner's All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages whose design philosophy emphasizes ease of use. Since COBOL, PASCAL, and BASIC are all recognized as high-level programming languages, the correct choice is (d) 'All of the above'.