Does vinegar conduct? yes or no

yes!

Vinegar is an aqueous solution of acetic acid and is produced by the fermentation process of ethanol or sugars. Since it releases H+ and CH3COO- ions, movement of these ions in the solution aids in the conduction of electricity. Hence, vinegar is a good conductor of electricity.

h let me think

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