Plz answer this problem and show how you go the answer thx

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

What is the distance between point a and b

Plzzz answer both questions and i will give you 100 points