When a question stem uses the phrase "strongly support," make sure to note what direction the support is going. Here, the stimulus supports the correct answer, so this is an Inference question.
In the stimulus, it is learned that Ace is moving its production of engines to Mexico, that car and truck assembly will still occur in the United States, that the company will save $20 million from the move after increased transportation charges, and that it costs more to transport engines from the new plants than it did to transport them from the old plants.
It's often hard to predict an answer to an Inference question, so if nothing jumps to mind, evaluate the answer choices and look for one that must be true based on the stimulus.
If the company will save $20 million per year after the difference in transportation costs is considered, then the company would definitely save more than that if there were no difference in transportation costs. Thus, (C) is correct.
None of the other answer choices has to be correct. (A) and (B) may seem likely, but they do not have to be true. It could be true that profits at Ace will be negatively affected by some other factor (perhaps consumers will stop buying Ace cars when they hear the news), driving the stock price down. Also, Ace could be redeploying all old employees of the engine plant to new roles, obviating any protests.
(D) may be tempting since it is known that transportation costs are higher from the Mexican plants. However, this choice does not have to be true - it could be that there is some sort of surcharge for crossing a border that affects pricing. Similarly, it could be true that gasoline or other transportation inputs are more expensive in Mexico.
(E) does not have any support in the stimulus. There's no breakdown of savings versus increased costs, so the truth of this statement can't be determined.