Which of these is a way to be sure that products or services are acceptable to customers?

a. quality control
b. reinforcement
c. self-talk
d. socializing

To make sure products and services are acceptable to customers they will put...

A. Quality control

Keeping track of the quality produced can help the company or whatever this question is talking about.

answer: proteins

explanation: complement is   system of circulate in the blood in a inactive form

i believe is what you're looking for?

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.