Final Answer:
The landform likely to be created if a volcanic eruption doesn't flow rapidly and mounds around the vent and flows slowly is Lava plateau, thus the correct option is B.
Step-by-step explanation:
A volcano is an opening in the Earth’s surface through which molten rock, ash and gas erupt. When a volcano erupts, it can send lava, ash and other debris down its slopes and into surrounding areas. Depending on the type of eruption and the surrounding environment, the lava can flow quickly or slowly, creating different landforms. When the lava flow is slow and steady, it can create a lava plateau.
A lava plateau is formed when the lava slowly flows from the vent and builds up in a mound. As the lava continues to flow, it spreads out in all directions. This creates a large area of flat land with a shallow slope. Since the lava is flowing gradually, it takes a longer time to cool and harden. This gives it a chance to spread out further and form a larger area with less depth.
On the other hand, a caldera, shield volcano and stratovolcano are all created when the lava flows rapidly. A caldera is a large basin-shaped depression formed when a large amount of magma is rapidly ejected from the Earth’s interior. A shield volcano is formed when a large amount of lava flows quickly and creates a gentle, sloping shape. A stratovolcano is created when a large amount of lava and ash is explosively ejected from the Earth’s interior and forms a steep, cone-shaped structure.
In summary, if a volcanic eruption doesn't flow rapidly and mounds around the vent and flows slowly, the landform likely to be created is a lava plateau. A lava plateau is formed when the lava slowly flows from the vent and builds up in a mound. As the lava continues to flow, it spreads out in all directions, creating a large area of flat land with a shallow slope. On the other hand, a caldera, shield volcano and stratovolcano are all created when the lava flows rapidly.