When you remove energy from a substance there will be a * A. Increase in movement of the molecules
B. Decrease in movement of the molecules

b, decrease in movement of the molecules

Explanation:

removing the energy will begin making the molecules lock up and stop moving due to the loss of energy.

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c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

let that person have a turn to speak : )