The rock with the least carbon content is? by Sunday | Dec 31 | Geography JAMB | 0 comments A. coal B. sandstone C. marble D. lignite Correct Answer: Option B – sandstone Users Also Read These:"Do you know any cardiologist, because my heart…What is the percentage water content of soil sample…To obtain pure carbon(ii)oxide from its mixture with…A basin where rock layers have been folded and in…In the carbon cycle, carbon dioxide is used by crops for?