Answer:
A. Shale
Explanation: Sedimentary rocks are converted into metamorphosed rocks under high temperature and pressure. Shale is a sedimentary rock which get converted into slate under high temperature and pressure. Shale is a sedimentary rock made up of volcanic ash or clay while slate is a fine- grained , homogeneous metamorphosed rock. Slate can be found in many colors such as- grey, green, pale to brown.
