What is the best way for a restaurant to protect itself against lawsuits?

Having strict food safety guidelines
Having a good insurance policy
Posting signs warning patrons of dangers such as wet floors
Training their employees to look out for hazards

This academy exemplifies establishment art of 1800s france courbet 2. this artist's best-known works were depictions olf peasants at work loose 3. french art movement that began in 1840 realist 4. painters' group that lead the way to impressionism idealized past 5. 19th-century writers and artists were concerned about this millet 6. main goal of realist artists art's 7. kind of art that courbet rejected realist 8. courbet did not believe in art for this sake napoleon iii 9. subject of academic art academic 10. french leader beginning in 1852 édouard manet 11. prominent american realist painter barbizon 12. seminal figure of the french realism movement conventions 13. the kind of brush work that courbet used french 14. in his landscapes the eye was more important than this eakins 15. father of modernism social justice

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Based on the sentence, what does a studious effort require