Which line is a loop variable update statement in the sample code?

Which phase of a Waterfall approach defines specifics on how to build a program?
A program calculates the average miles per gallon given miles traveled and gas consumed. How should the item that holds the miles per gallon be declared?
A software engineer has written a program that uses a large number of interacting custom data types information hiding, data abstraction encapsulation polymorphism, and inheritance Variables do not need to receive their types ahead of time, and this program can run on a variety of operating systems without having to re-compile the program into machine code.
Which type of language is being used? Choose 3 terms that accurately describe the language.
Which line is a loop variable update statement in the sample code?
integer h = 0
do
Put "What is the password?" to output
String userInput = Get next input
if userInput != pwd
Put "Incorrect." to output
h = h + 1
while (userInput != pwd) and (h