Correct option is (c) The Arduino code is processed by a compiler
The best I can explain: The Arduino code is a working subset of the C++ programming language. The C++ programming language is a compiled one, not an interpreted language. The main difference between an interpreter and a compiler is the way that each one of them handles the debugging and execution of the code. A compiler first checks if the code has any syntax errors or not and then proceeds to converting or more appropriately translating the written code into assembly, while the interpreter executes the code line by line irrespective of whether there is any syntax error in the code or not.