Which one of the following will most readily be dehydrated in acidic condition ? (a) (b) (c) (d)

Dehydration reaction is the reaction which involves the removal of water molecule. From an alcohol, water molecule is removed to form the corresponding alkene and this is called as the dehydration reaction of alcohols. Molecule which has more conjugation, greater will be the stability and the easier will be the dehydration Hence, in the acidic conditions the compound (a) will be most readily dehydrated. Hence, the correct answer is option (a)