The correct answer is:
(c) Platter
A platter is typically not part of the manifold in medical or laboratory equipment, such as systems used for fluid handling or diagnostics. The manifold generally refers to a system of tubes or channels used to direct fluids, and components like transmission tubing, pump tubes, and plastic tubes are often part of this system. A platter, on the other hand, is generally associated with a different kind of equipment, such as in centrifuges or disk-based systems, rather than fluid distribution systems.