Also, revenue = sale price + profit

Even if they had given us information about how many cars were sold at what price, the answer would be E.

Let me know if that reasoning is flawed.

Taken from the OG guide. Carnivorous mammals can endure what would otherwise be lethal levels of body heat because they have a heat-exhange network which kept the brain from getting too hot. The correct answer is "that keeps". My question is, will "which keeps" be a correct answ...

Another reason why I think option E is not correct is because which introduces non essential clauses and "visible on many copper items, and ....." is absolutely essential to the meaning of the sentence. If we remove the part enclosed within 'which' , we have ' Aerugo, also known as verdigr...