Which statement is true about the relationship between a monopoly and its competition in a market?

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be the first, having to do with the fact that monopolies greatly diminish competition in a market, since they consolidate power within a single firm. 

Are there any answer choices

The embargo act of 1807  was a law passed by the united state congress and signed by president thomas jefferson on december 22,  1807. it prohibited american ships from trading in all foreign ports. in 1806, france passed a law that prohibited trade between neutral parties, like the u.s., and britain.