What evidence from “NASA’s Curiosity Rover Finds Clues to How Water Helped Shape Martian Landscape” is the most relevant support for the assertion that lakes may have once existed on Mars?
_(Select all that apply.)_
The rock layers—alternating between lake, river and wind deposits—bear witness to the repeated filling and evaporation of a Martian lake much larger and longer-lasting than any previously examined close-up.
“The great thing about a lake that occurs repeatedly, over and over, is that each time it comes back it is another experiment to tell you how the environment works,” Grotzinger said.
“We may see how the chemistry changed in the lakes over time. This is a hypothesis supported by what we have observed so far, providing a framework for testing in the coming year.”
This interpretation of Curiosity’s finds in Gale Crater suggests ancient Mars maintained a climate that could have produced long-lasting lakes at many locations on the Red Planet.
A and D?
"...the most relevant support for the assertion that lakes may have once existed on Mars..."
I'd choose only A.
To me, D is speculative.
There must be another one though. A and B?
Yes, the most relevant support for the assertion that lakes may have once existed on Mars is evidence from options A and D:
A) The rock layers—alternating between lake, river, and wind deposits—bear witness to the repeated filling and evaporation of a Martian lake much larger and longer-lasting than any previously examined close-up.
D) This interpretation of Curiosity’s finds in Gale Crater suggests ancient Mars maintained a climate that could have produced long-lasting lakes at many locations on the Red Planet.
Option A mentions the rock layers, which indicate the repeated filling and evaporation of a Martian lake. This suggests the existence of a larger and longer-lasting lake than any previously observed on Mars.
Option D suggests that the findings in Gale Crater support the idea that Mars had a climate capable of producing long-lasting lakes at multiple locations on the planet.
Together, these findings provide strong evidence for the existence of lakes on Mars in the past.