Which of the following is the BEST example of a procedural abstraction?

1. Correct Answer
   Incorrect Answer
   a

   A program is written to search a text and count the number of times a key word is found

2. Correct Answer
   Incorrect Answer
   b

   A conditional statement is used to determine if a user’s input is correct

3. Correct Answer
   Incorrect Answer
   c

   A while loop is used to continuously ask the user to enter number until they enter a negative number

4. Correct Answer
   Incorrect Answer
   d

   A function is used to validate a password by passing the password to the function and returning true or false