Diaphragm it's that simple
<span>"Water in which the armor of the Incan empire’s conquistadors has not rusted", implies that the waters of Lake Titicaca have a special property. Metal rusts when exposed to normal water, yet the armor has been in the lake ("entombed[...] in its profound vase") for centuries, and has not rusted. The waters must have special powers.</span>
Sentence 3 does because Kayla answered the phone and crashed the car.