What is a decryption key?

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

Which of the following is an example of synchronous communication? a) e-mail b) voicemail c) telephone conversation d) text message.

Which key should you press to leave the cell as it originally was? a. delete b. cancel c. backspace d. enter