Answer:
The correct statements are that the Curiosity rover found sulfur compound in rocks, and detected carbon in organic molecules.
Step-by-step explanation:
The Curiosity rover detected methane gas in the atmosphere of Mars as well as organic substances from shallow-soil samples from Gale crater. Both the soil compounds and methane gas are organic matter. The organic matter is chemically illustrated as combinations of hydrogen, carbon, and other elements basically witnessed in biology like oxygen and sulfur, that is, usually related to life.
At certain times, the rocks can get produced on their own via the geological procedures. However, discovering organic matter in such large concentration indicates that it potentially exhibit biological origins, either from bacteria or other life forms, which prevailed long ago.