GMAT
Advertisement: When your car`s engine is running at its normal operating temperature, any major brand of motor oil will protect it about as well as Tuff does. When the engine is cold, it is a different story: Tuff motor oil flows better at lower temperatures than its major competitors do. So, if you want your car`s engine to have maximum protection, you should use Tuff.which of the following, if true, most strengthens the argument in the advertisement?
【选项】Tuff motor oil`s share of the engine oil market peaked three years ago.
题目基本信息