Answer:
The former crater lake nestled on a volcanic cone on the East Rift Zone of Kīlauea, filled with lava in 2018, is A. Wai a Pele.
Step-by-step explanation:
Wai a Pele, also known as the "Water of Pele," was a crater lake situated on the East Rift Zone of Kīlauea, an active shield volcano in Hawaii. In 2018, during the volcanic activity on Kīlauea, lava inundated Wai a Pele, drastically changing the landscape. This event was part of the larger eruption that affected the surrounding areas and reshaped the geography of the volcano.
The filling of Wai a Pele with lava exemplifies the dynamic and ever-changing nature of volcanic environments, where geological processes continually shape and transform the landscape.
Option A is correct.