If I were to go to mars I would bring a lot of water, a lot of food (enough to stay alive), clothes and an astronaut suit incase there is no oxygen.
I chose these things because if we didnt have cloths we wont have anything to wear. We also need a astonaut suit to survive oxygen problems if they happen. Also without food we will not get nuitriance without nuitriance u cant survive. In addition, we need water to survive as we are made up of over 50% water.