Answer:
B.) Magma
Explanation:
Lava - Magma that reaches Earth's through a volcanic vent
Magma - Composed of molten mixture of rock-forming substances, gases and water
Batholith - Very large igneous intrusion extending deep in the earth's crust
Slurry - Semiliquid mixture, typically of fine particles of manure, cement, or coal suspended in water
I think radiation and energy transfer!
Answer : The balanced redox reaction will be,

Explanation :
The given chemical equation is,

In the half reaction method, the number of atoms in each half reaction and number of electrons must be balanced.
The half reactions in the acidic medium are :
Reduction :
......(1)
Oxidation :
.......(2)
Now multiply the equation (2) by 4 and then added both equation, we get the balanced redox reaction.
Thus, the balanced redox reaction will be,

Answer: Both are only physical changes. •
Explanation: