Holly wants to design a test to find out how fast her friend Jill can walk from one end of the playground to the other. Which question would be best for Holly to answer with her design?
A. What kind of shoes is Jill wearing?
B. Do dogs walk faster than people?
C. How fast can Daniel ride to school on his bike?
D. How can I measure Jill's speed?

D

the answer can not be A because the type of shoes jill is wearing doesn’t have anything to do with her speed

The answer can not be B because dogs are not any part of this experiement

the answer can not be C because they are testing the speed of a person not a bike

Any photo? or something

Answer:

a. energy is absorbed in the reaction.

explanation:

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.