Final answer:
The answer is b. Geologists, ocean, underwater, push, tectonic. Geologists study plate tectonics and how it causes the movement of oceanic tectonic plates, leading to mountain building and volcanic eruptions.
Step-by-step explanation:
The correct answer is b. Geologists, ocean, underwater, push, tectonic. This answer aligns with the concept of plate tectonics, which explains the movement of the Earth's lithosphere. Geologists study how the oceanic tectonic plates can push against each other and cause mountain building or volcanic eruptions. This process is also responsible for the creation of features like the Hawaiian island chain.
Learn more about Plate Tectonics