In What Way Was Volcanism Important to the Development of Life

In what way was volcanism important to the development of life on Earth?

A) Volcanoes provided the heat necessary for the chemical reactions to create complex organic molecules.
B) Amino acids were probably present in the gases emitted.
C) Carbon dioxide, water vapor, and nitrogen were outgassed from volcanoes.
D) Molten lava dissolved various organic materials on Earth's surface and allowed them to mix together so they could react.