The correct answer C. Pectinoid is the most occurring fossil that is a bivalve. They are a superfamily of marine bivalve mollusks which includes scallops and oysters. Members of this family have a triangular resilium.
The answer would be the cracking of rock caused by the freezing and thawing of water.
They would want to hire someone who is experienced working in a pottery factory, or someone who knows how to make pottery.
