I am stuck on these 2 questions please answer correctly

Question 3 12 pts In the absence of randomized assignment, comparing the outcomes of participants and non- participants is not ideal because both observable and characteristics may differ between these groups in important ways. Fill in the blank with the BEST answer: O unobservable O unimportant O identical Question 4 12 pts True or False: A process evaluation and an impact evaluation are interchangeable terms for learning whether a program caused a change in outcomes. False True