Choice B. A strong theme can be applied elsewhere beyond the scope of a single story in which it appears.
Answer:
The rules of political institutions.
While politics can play a role in changing the economy, political institutions are not directly related with the economy itself.
You forgot your options, but I think i've seen this question somewhere already and i remember them. The answer is that it is not true that <span>Iron could be manufactured without the need to heat it up. </span>
It would be drinking and driving, and ignoring driving signs