What are the three main weapons of predators?

Predators possess usually good senses to find their prey and special abilities to trap the prey. Predatory birds, for example, had an outstanding eyesight and sometimes hearing, for the case of the owls while other predators, like many species of mammals, have a very high sense of smell that helps them locate prey. Many predators are very fast, and use their speed to help capture their prey, some are fastest runners, fast fliers and fast swimmers. 

C. gemstones they are the only non metallic mineral from the list.

Go into your kitchen and get some water or coolaid and warm up at hot dog