a. Identify and explain TWO distinct aws in the internal validity of Dr Sniffy's study (4 marks) (80 words) The selection of the participants is a distinct aw in the internal validity because participants were not randomly assigned to the groups as they were placed based on what class they attended. Another distinct aw is that the participants in the groups were told the same information which would make it hard to access the data as it would be similar. 1). Identify and explain TWO distinct aws in the execution and/or interpretation of the statistical anales in Dr Sniffy's study (4 marks) (80 words) c. Identify and explain ONE ethical issue with Dr Sniffy's study, and how this could be addressed in future studies (4 marks) (40 words)