Explain the difference between a figure-eight follow-through knot and a figure-eight on a bight, including typical applications for each.

• A. Figure-eight follow-through is a fixed loop for attachment; figure-eight on a bight ties into a harness.
• B. Figure-eight on a bight forms a harness attachment; figure-eight follow-through is used for rescue.
• C. Figure-eight follow-through ties into a harness for belay-in rope; figure-eight on a bight creates a fixed loop used for attachment or rescue; follow-through ends with a long tail.
• D. Both knots serve identical purposes and are interchangeable.

Answer: (C)