In a file extension, it tells what type of file it is and tells what compiler to run the code.
Answer:
an algorithm (pronounced AL-go-rith-um) is a procedure or formula for solving a problem, based on conducting a sequence of specified actions. A computer program can be viewed as an elaborate algorithm. In mathematics and computer science, an algorithm usually means a small procedure that solves a recurrent problem.
I would probably say B even though the other methods might work as well
