Paleontology is the study of

Correct option is B

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Paleontology is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene Epoch (about 11,700 years ago). Fossils, which are the preserved remains, impressions, or traces of once-living organisms from the past, are the primary focus of this field. By studying fossils, paleontologists can learn about the history of life on Earth, including the evolution and interactions of different species.

Coins and rocks fall under numismatics and geology, respectively.