Question: What is a thread?

1. A single operation that does not return a value and that usually executes asynchronously
2. the basic unit to which an operating system allocate processor time
3. a series of related tasks or methods that together turn inputs into outputs
4. a program that is running on your computer

Answer: The correct answer of the above question is Option A:A single operation that does not return a value and that usually executes asynchronously