Your original response to the Discussion topic should be at least 350 words and should reflect the fact that you have completed the Reading and activities. Use your words wisely so that the posting has substance and includes examples and explanations. Best practice is to include citations and a reference list.Needs Assessment: Theoretical Considerations and Approaches to Measurement Examine and define elastic and elasticity; normative and perceived needs; and expressed and relative needs. How are they each related to needs and needs assessment? Examine strengths and limitations of the concept “at-risk” in Chapter 4 of your text. Explain what the strengths and limitations are of the concept “at-risk” when used in needs assessment. Examine the use of existing surveys from the reading in Chapter 5. Explain some of the potential pitfalls when you use existing surveys to estimate need. Explain the benefits of examining the distribution of need geographically.