Which of the following will increase the reaction rate of an enzyme reaction?
a. decreasing the amount of enzyme while leaving the product amount unchanged
b. decreasing the amount of product while leaving the enzyme amount unchanged
c. increasing the amount of enzyme while leaving the substrate amount unchanged
d. increasing the amount of substrate while leaving the enzyme amount unchanged

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.