Charlotte Liu is the general manager at a mid-sized chemical plant in Edmonton, Alberta. The plant is performing well. However, she believes that because they sometimes use hazardous chemicals during production, her line managers could benefit from a review of the legal risks inherent in the plant's activities. She thinks the managers could then work together to develop a communications program to share the information with their employees. As a recent business graduate, she still remembers many of the key principles she learned in her commercial law class. While many of those principles help her in her role on a day-to-day basis, Liu believes that given the nature of the plant's activities, her review should focus on tort law in particular. a. What are 3 to 4 major points Liu should consider including in the review. b. What are two to three defenses to tort actions?