Questioning or inquiring about the current set of laws and regulations imposed upon us will help develop other aspects and lead to the development of our intellectual society. The inquiry process leads to absolute freedom, which makes us think deeply and discover what is true and false. Hence, we would grow stronger mentally and gain more knowledge than we could have received when rules bound us. So, the author tries to tell us that instead of blindly following the rules, we must inquire about the traditional significance to have a more comprehensive understanding of their importance. Thus, we can secure several perspectives and develop our minds, leading us to true freedom.
A compound (A) with molecular formula $C_4H_9I$ which is a primary alkyl halide, reacts with alcoholic KOH to give compound (B). Compound (B) reacts with HI to give (C) which is an isomer of (A). When (A) reacts with Na metal in the presence of dry ether, it gives a compound (D), C8H18, which is different from the compound formed when n-butyl iodide reacts with sodium. Write the structures of A, (B), (C) and (D) when (A) reacts with alcoholic KOH.