The correct answer is Compiler. System software is generally prepared by computer manufacturers. These software products comprise programs written in low-level languages, which interact with the hardware at a very basic level. System software serves as the interface between the hardware and the end-users. Compilers translate coded programs written in high-level languages into machine instructions that can be understood by processors. System software, such as operating systems, hypervisors, and distributed protocols, are also essential components of modern computing systems. Hence, the correct answer is Compiler.