The rock layers shown in the illustration have not been disturbed or overturnedBasalt (Igneous)Sandstone (Sedimentary)Siltstone...

The given rock layers in the illustration show a sequence from bottom to top: slate (metamorphic), siltstone (sedimentary), sandstone (sedimentary), and basalt (igneous). This sequence indicates the following geologic history:

Metamorphic rock (slate) at the bottom suggests an initial period of high heat and pressure.

Sedimentary rocks (siltstone and sandstone) above the slate indicate subsequent periods of deposition under water.

Basalt (igneous) at the top suggests a volcanic eruption depositing lava that solidified into basalt.

Therefore, the correct conclusion about the geologic history of this area is that it experienced a volcanic eruption and then was located underwater.

References

Integrated Physical Sciences: Sedimentary, metamorphic, and igneous rock formation processes.

Geologic history interpretation based on rock layers.