Q3) a. Identify and explain two potential strengths and two potential weaknesses of the selection of controls. (8 marks)

b. A number of exposures were of interest in this study. What were the broad categories of exposures in this study?

c. Identify and explain one strength and one limitation of the methods for exposure assessment. Refer to this Article for this question: https://drive.google.com/file/d/1kj94Klgdii7ObD5U8h6YpX4vbEgoD6Zw/view?usp=sharing