Final assignment. 4 Qns (550words limit) 1. Using any two layers of the SE model, explain with evidence two reasons (one reason for each layer) for the increase in physical inactivity in developed cities around the world. Which of these reasons do you think is more significant than the other? Justify your choice. You may refer to a variety of examples from anywhere in the world to support your answer. 2. Using any two other layers not chosen in Question 1, describe in detail two initiatives (one initiative for each layer) that have been implemented in Singapore to promote active ageing. Which of these initiatives do you think has been more successful than the other? Justify your choice. 3. Making reference to relevant aspects of the Public Health Approach, discuss two possible challenges involved in the use of big data in developments to improve public health. Which of these challenges is more difficult to overcome than the other? Justify your choice. You should refer to a variety of applications of big data in public health to support your answer. 4. Making reference to relevant aspects of the Public Health Approach, examine two reasons why humanitarian efforts in times of natural disasters may sometimes achieve limited success. Which of these reasons has a greater influence on the success of humanitarian efforts than the other? Justify your choice. You should refer to a variety of real‐life examples of humanitarian efforts and/or natural disasters to support your answer.