Final answer:
Myra can effectively sue the manufacturer, the seller, and potentially the neighbor if she files a product liability lawsuit for the defective can opener that caused her injury.
Step-by-step explanation:
If Myra files a product liability lawsuit, she can effectively sue the manufacturer, the seller, and potentially the neighbor, depending on the circumstances.
Product liability laws hold manufacturers and sellers responsible for defective products that cause harm to consumers. In this case, the defective can opener caused injury to Myra, making her eligible to file a lawsuit.
Myra can sue the manufacturer because they are responsible for ensuring the safety of their products. She can also sue the seller because they have a duty to sell safe products to consumers. Lastly, depending on whether the neighbor knew about the defect, Myra may be able to sue them as well.