Answer:
B/ Because the electrolyte rich baths were infused with in consistent amount of Ach.
Explanation:
Why B? Because the electrolyte rich baths were infused with in consistent amount of Ach. Used concentrations * Ach used, thus we get double the result.
Not A: Because the control need to be used.
Not C: Because autoimmune antibodies are transported to every tissue of body including skeletal muscle.
Not D: Mice and other rodents are often used as animal models.