How did Greyhound respond to the competition from the new bus lines? Did the intensified competition ultimately hurt or help Greyhound?

Hello. You have not introduced the text this question refers to. This makes it impossible for your question to be answered. However, I will try to help you as best I can.

It is only possible to know the exact answers to your questions if the text related to them is read. So, to answer them, you will need to read this text. However, companies respond to competition by lowering the price of their products and services, or by increasing the quality of these products and services, making them have a differential that can attract consumers. It is likely that Greyhound has taken one of these two approaches. This competition helped Greyhound if it managed to have more customers and a higher profit, however, if it lost customers and its profit rate decreased, it means it was hurt by the competition.

the french gave their support to another tribe during he war.

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.