The type of sedimentary rock that can resemble an igneous rock is Conglomerate. This si so because Conglomerate, even though is a sedimentary rick, contains many fragments of igneous rock. Remember that igneous rocks are also called magmatic rocks and is one of the three main rock types.
Backward chaining starts with a goal then searches back. Forward chaining starts with facts and searches forward.
Answer: A
Explanation: I feel as if it could be all of them except C