____ involves choosing between alternative courses of action based on some value within a program.

________ is the process of encoding e-mail so that only the person with a corresponding key can decode and read the message

Fill in the blank(s) with correct word

In a recursive method that writes a string of characters in reverse order, the base case is ______.

a) a string with a length of 0 b) a string whose length is a negative number c) a string with a length of 3 d) a string that is a palindrome