In the realm of scientific inquiry, the analogy between the mechanisms of a fusion reactor and the process of stellar formation serves as a fascinating example of how complex natural phenomena share underlying principles. Just as a fusion reactor harnesses immense heat and pressure to combine lighter atoms into heavier ones, resulting in energy production, stars are born in the cosmic furnace of nebulae, where gravitational pressure initiates nuclear fusion. Both processes exemplify a transformative change, but they occur in vastly different scales and environments.

Based on this analogy, which of the following statements illustrates a comparable relationship?