During eccentric muscle contraction, the muscle
a. gets longer as it contracts
b. gets shorter as it contracts
c. moves isometrically
d. does not change length

The right option is; A. gets longer as it contracts

During eccentric muscle contraction, the muscle gets longer as it contracts.  

An eccentric contraction, also called braking contraction is a type of muscle activation in which the tension on an active muscle is increased which lengthens it as it contracts. This contraction usually takes place when a muscle resists a stronger force, which causes the length of the muscle to increase as it contracts. Certain exercises that can cause an eccentric contraction include; downward motion of push-ups, lowering weights, and going down stairs

                                                        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.

this is really easy just look up what these words mean