if anyone is on a Chromebook, do you ever mean to press backspace, then you accidentally press the power button and think "OH CRA, P there goes all that work!" but then it doesn't turn off. does anybody else feel my pain?

What is a loop? a. a collection of function definitions at the top of a program b. a line of code that defines a variable and assigns it a value c. a program that opens the turtle graphics window d. a block of code that repeats a specific number of times