The economic success of United states was in no way imparted by the mineral lead.
In fact, the mineral is considered a toxic pollutant and has been banned. The United States like most countries are not interested in lead as a viable economic option.
It was once used in paints because they produce a highly durable mix.
Also, it was an additive in gasoline. This has been banned.
i personally would say the answer is A. a benefit is a good thing that happened to you, you don't really have to give something up for it so a positive consequence makes the most sense.
