Question

which process will transform a metamorphic rock into an igneous rock?
deposition from sediment within a river
weathering into much smaller particles
melting due to high temperatures
compression under intense pressure over time

Explanation:

Igneous rocks form from the cooling and solidification of magma or lava. For a metamorphic rock to become an igneous rock, it must first melt to form magma due to high - temperature conditions. Deposition from sediment forms sedimentary rocks, weathering breaks down rocks but doesn't form igneous rocks, and compression under pressure forms metamorphic rocks.

Answer:

Melting due to high temperatures