Correct Answer: Trace rock

Solution : The correct answer is Trace Rock.

"Trace rock" is not a recognised type of rock.

• Igneous rock is formed from the solidification of molten material (magma or lava) and includes rocks like granite and basalt.
• Metamorphic rock results from the alteration of pre-existing rocks due to heat, pressure, or chemical changes; examples include marble and slate.
• Sedimentary rock forms from the accumulation and compaction of sediment, such as sandstone or limestone.