Question

what is outgassing?process by which solids that were once dissolved in molten rock are released as the rock hardens into a coreprocess by which liquids that were once dissolved in molten lava are released as the rock hardens into a crustprocess by which gases that were once dissolved in molten rock are released as the rock hardens into a crustprocess by which gases that were once dissolved in molten lava are released as the lava hardens into a core

Explanation:

Outgassing is a geological process where dissolved gases in molten rock (magma/lava) are released as the rock cools and hardens into crust material. The correct option matches this definition by specifying gases from molten rock released as it forms crust.

Answer:

process by which gases that were once dissolved in molten rock are released as the rock hardens into a crust