What is a sedimentary rock?(1 point) Responses a type of rock formed over long periods of time by the cooling and solidification of molten Earth material a type of rock formed over long periods of time by the cooling and solidification of molten Earth material a type of rock that is formed over long periods of time by layers of silt building up on the floor of a body of water a type of rock that is formed over long periods of time by layers of silt building up on the floor of a body of water a type of rock that is formed over long periods of time by the transformation of existing rock types a type of rock that is formed over long periods of time by the transformation of existing rock types a type of rock that is formed in a very short period of time by sudden violent volcanic eruptions into the ocean