Which of the following statements best describes fused tetanus?

• A. A brief and single contraction-relaxation cycle of muscle fiber in response to a single stimulus.
• B. An increase in muscle force resulting from repeated stimuli arriving at the muscle fiber before the previous twitch has completely relaxed.
• C. A smooth and continuous contraction resulting from the rapid stimulation of the muscle, without any relaxation in between.
• D. An increase in muscle force resulting from the activation of additional motor units within a muscle.

Answer: (C)