Answer:
A) Cryosphere and geosphere
Explanation:
Hi, as the question says, when mountain glaciers melt due to the hot lava released by a volcano , two of Earth's spheres interact.
The first one is cryosphere because it includes all the regions of the Earth in which the water is in solid state, such as the poles, the ice in the seas and the glaciars.
The second one is the geosphere which includes the three solid parts of the Earth (core, mantle and the litosphere) and knowing that lava is just a part of the mantle's compounds that reach the surface throught a volcano it's okay to say that geosphere and cryosphere are interacting in that situation.
