Books,well trusted websites , news.reports , schools library (online and off ) hope this helps.:-)
Answer:
Simply put: A callback is a function that is to be executed after another function has finished executing — hence the name 'call back'. ... Functions that do this are called higher-order functions. Any function that is passed as an argument is called a callback function.
Explanation:
This person is Elon Musk, the owner of Tesla :)