Kim went to Lings's Market to pick up a few things for dinner. It was a stormy day, and the wind had blown water through the market's door each time it opened. As Kim entered through the door, she slipped and fell in the rainwater that had accumulated on the floor. The manager knew of the weather conditions but had not posted any sign to warn customers of the water hazard. Kim injured her back as a result of the fall and sued Ling's for damages. Can Ling be held liable for negligence? Why?