Shortness of breath and a productive cough

A 58 year old man presents in your clinical environment with a shortness of breath and a productive cough.
Part ONE: As Part of your history taking what questions would you ask with regards to the presenting condition? (20 marks)
Part TWO: Critically analyse the stages of a physical examination. Use the literature to support your discussion. (50 marks)
Part THREE: Discuss two possible causes and suggest an appropriate action plan. Utilise the literature and any known guidelines that you have sourced, along with your own knowledge to demonstrate your clinical decision-making skills and support your answer.