What are the rock name and map symbol used to represent the sedimentary rock that has a grain size of 0.006 to 0.2 centimeters?
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The best and the most correct answer among the choices provided by the question is the fourth choice. The number 4 rock number and map symbol is used to represent the sedimentary rock that has a grain size of 0.006 to 0.2 centimeters. I hope my answer has come to your help. God bless and have a nice day ahead!

D. The discoveries confirmed many but not all of the classifications that were based on observable traits, and scientists revised classifications when necessary.