Which activity is a result of high muscular endurance?
a. folding laundryb. raising a 100-pound barbell one timec. watching t. v.
d. hiking up a mountain trail

Explanation:

Endurance refers to the time from the start to end, when you stop because you cannot keep going. So, having physical endurance will make you able to hike up a mountain, because this activity is one of the most physical demanding. A person can be the best weight lifter at the gym, but if he doesn't train endurance, that person won't be able to hike a mountain.

On the other hand, the other option that we could think is "raising a 100-pound barbell on time", but this activity requires strength not endurance.

one pad at the centre of the baby's chest and the other pad on the centre of the baby's upper back.

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                                                        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.