Answer: Flowing Water
Explanation: Flowing of water on the land makes channels on the planet Mars.
The flowing of water is the geologic process that could have formed the channel on Mars. According to the image we can say that flowing of water on the land made the channels on the Mars just like on the earth. When the water flows for a long time from the same area, it takes the sediments and make channels so we can say that the flowing of water makes the channels on the Mars.
Flowing water have formed the channel on Mars because the evidence card flowing water formed by water showed the channel formed by water on Earth have a curved and branching similar shape of the channel on Mars.