Which of the following alternative will replace the question mark?

Evaporation : Cloud : Rain :: ?

Accident : Injury : Pain

First evaporation of water takes place and then the clouds are formed due to it. After clouds are filled excessively with water particles, they start raining. In a similar manner, first, an accident takes place which causes injury to an individual, and that injury causes pain. In a simpler manner, we can say that the first causes the second and the second causes the third.