In a gastrocnemius-sciatic (nerve-muscle) preparation electrical stimulation of the nerve caused twitching of the muscle
The principle of quantitative reasoning explains that ratio, percentage and series logic determine correct calculation. Hence stimulation of the nerve was communicated to the muscle through the mediation... fits best because it meets mathematical and logical criteria, as documented in authoritative sources on aptitude and reasoning.
Ref: Wren and Martin, High School English Grammar and Composition, Revised Edition, Chapter 12, discusses vocabulary and comprehension providing guidance for verbal aptitude and logical inference assessment.
