Large numbers of chinese immigrants found work
a. on farms
b. in small shops and groceries owned by white people
c. in factories
d. on the railroads

The correct answer is option D: on the railroads.

Explanation

Large numbers of Chinese immigrants found work on the railroads because it was a job nobody wanted to do, especially for extremely low pay. Therefore, instead of hiring US citizens, they began hiring Chinese immigrant workers.

Moreover, these Chinese workers were willing to do their job in poor and dangerous conditions as well as they were considered calm and submissive. They were efficent workers.

where is your diagram?

well this isn't a question but if you are asking if it is true or false it is, true.