Answers

2014-07-12T20:50:51+05:30
  • Brainly User
2014-07-12T20:52:56+05:30
Vehicle is ans becoz river is for dam is traffic is for controlling vechicle

thats y the ans is vehicle

0
mark best bro
the answer is vehicle becaus river extras in dam (controling)
sorry i think the ans is signal becaus rivers extra water in dam for controlling ,traffic means many vehicle will be ther right for controlling them signal is used
mark it as best bro ples