Which of the following statement is a fixed iterative loop?

1. for
2. while
3. if
4. if-else

How is the range() function typically used in a for loop?

1. range(start, end)
2. range(end)
3. range(start, end, step)
4. range(step)

Which of the following statements is most appropriate to illustrate the difference between a for loop and a while loop?

1. A for loop is used for fixed iterations, while a while loop is used for conditional statements.
2. A for loop is more concise than a while loop.
3. There is no difference between for loop and while loop.
4. They are not interchangeable.

Which of the following statement holds valid with Python for loop?

1. initial value is an optional
2. stop value is mandatory
3. step value is an optional
4. none