Which tool translates assembly language into object code?

• A. Assembler
• B. Compiler
• C. Interpreter
• D. Linker

Answer: (A)

Translating assembly language into machine-ready code is done by an assembler. An assembler takes human-readable assembly instructions, each mnemonic representing a specific machine operation, and converts them into the corresponding machine opcodes, producing object code that can be linked into a complete executable. It also processes directives, symbol names, and relocation information to organize the code and data correctly.

Other tools serve different purposes: a compiler translates high-level language source code (like C or C++) into machine code or an intermediate representation; an interpreter executes code directly, typically without creating a separate object file; a linker combines multiple object files into a single executable, resolving references but not translating instructions from assembly to machine language.