What is meant by the term "hunting" as it applies to prime mover speed control governors?

Correct Answer: Option A — Hunting is the repeated and sometimes rhythmic variation of speed due to over control by the governor.

Hunting is an unstable condition characterized by rhythmic, continuous oscillations in engine speed. It occurs when a governor is overly sensitive or has excessive gain, causing it to over-correct for load changes. This constant over-control prevents the system from settling at a steady state, potentially damaging mechanical components.