Final answer:
Machine language code is a low-level programming language represented by binary numbers. Option A is an example of machine language code: 0100 1100 1111 0101.
Step-by-step explanation:
Machine language code is a low-level programming language that is directly understandable by a computer's hardware. It is represented by a series of binary numbers, such as option A in the given choices: 0100 1100 1111 0101. This code represents specific instructions that the computer can execute.