Answer: comparative advantages
Explanation:
Comparative advantages order refers to a method of organizing persuasive speeches whereby the speaker gives points on how the solution to a particular problem is preferable than other solutions that are proposed l.
It is a way of structuring a persuasive speech when the audience knows that there's a challenge regarding a particular thing but wants to be convinced that a particular plan is the best solution when compared to other plans.
In this case, since the speaker is trying to tell the audience that carbon tax is a better solution than an emission trading system to the problem of industrial pollution, then this is referred to as comparative advantage order.