Final answer:
Keahialaka in Puna has experienced its most recent volcanic activity from Kīlauea, which is one of the most active volcanoes on the island of Hawaii, powered by the underlying Hawaiian hotspot.
Step-by-step explanation:
Keahialaka is the name of a place in Puna where the most recent volcanic activity originated from Kīlauea. Mount Kīlauea is an active volcano on the island of Hawaii, known for being one of the most active volcanoes in the world. Along with the active volcano of Mauna Loa and the now-dormant Mauna Kea and Hualālai, these geological features are a part of the expansive volcanic activity caused by the Hawaiian hotspot. The heat from this hotspot supplies the energy for volcanic activity and has contributed to the formation of the Hawaiian island chain, of which Kīlauea is a significant part. The recent eruptions in the Puna district, of which Keahialaka is a part, have been attributed to Kīlauea's East Rift Zone.