Explanation:

Both statements are correct.

• A Shield volcano produces low viscosity, runny lava, it spreads far from the source and forms a volcano with gentle slopes. 
• Most of the shield volcanoes are formed from fluid and basaltic lava flows.
• Mauna Kea and Mauna Loa are shield volcanoes. 
• They are the world’s largest active volcanoes around the island of Hawaii.
• The Fukutoku-Okanoba Submarine Volcano erupted in the Pacific Ocean off the coast of Japan in 2021.

Hence option 3rd is correct.