Please help with question (b),(c),(d)and (e) with research. Thank you.

(b) Assume that a dataset is collected for traffic crash analysis. The dataset contains data of severe traffic crashes between 2015 and 2019 in Australia. The description of the dataset is listed in Table 1. Suggest two (2) additional variables that can be included in traffic crash analysis. Explain the rationale of their inclusion. Table 1. Description of the dataset Field Description Experience The driving experience of the driver (Under 7 years/7-14 years Over 14 years) Fatigue Whether the crash involves fatigue driving (True/False) Drunk Drug Whether the crash involves drunk or drug driving (True/False) Road_Type The type of road where the crash occurs (E.g., Highway, Freeway. etc) Road_Alignment The alignment of the road where the crash occurs (Eg., Straight, Down-curve, Slope, Up-curve, etc) Mark_Sign Whether there are well-equipped markings and signs at the location where the crash happens (True/False) Safety_Facility Whether there are well-equipped road safety facilities at the location where the crash happens (True/False) Time of Day The time of the day when the crash happens Region The district where the crash occurs Vehicle Type The type of the vehicle (Bus/Truck/Private car/Others) Num Vehicle Number of vehicles involved in the crash Severity Whether the crash is fatal (True/False) (c) Assume that there are two interesting findings obtained from traffic crash analysis: An experienced driver was likely to induce a severe crash on highways even though there were adequate safety facilities. Majority of severe crashes occurring in the southwest Australia region were single- vehicle crashes rolling down from a hill. Give one (1) potential explanation of each finding. Then, propose one (1) solution for improving road safety based on each finding. (d) Assume that your proposed solutions stated in part (e) have been implemented. Discuss how you are going to evaluate the effectiveness of the solutions. (e) Identify one (1) limitation of traffic crash analysis using the dataset stated in Table 1 and propose one (1) way to address the limitation. (Note: The limitation should not be about the lack of variables as stated in part (b).)