1-Summarize the reasons why it is important to clarify the elements of the operating theory of a public program before conducting an evaluation of its capacity to ameliorate the social problem it is designed to address. Define the elements of a programs theory in your response.2- Summarize the strengths, weaknesses, and limitations of a mailed surveys. Discuss when it is appropriate to use closed-end (forced choice) survey items. Differentiate among longitudinal and cross-sectional surveys, and describe variations of the former.3- Describe various sources of subjectivity in social science research that inevitably compromise the ideal of value-free research.4- Describe why the specification of the need for the amelioration of a social problem is a significant first step in designing a program to pursue that end.