Can someone explain how to solve this?

Which statement best describes the polynomial

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?

The reflexive property of congruence lets you say that ∠pqr ≅