In the online article, "Run Out on the Rails", the author states that whites ignored Chinese workers as long as: Question 4 options:
the Chinese workers would accept low pay
the Chinese workers spoke English
the Chinese workers were content/happy performing the jobs few white men wanted

the Chinese workers were content/happy performing the jobs few white men wanted

Explanation:

As the author of the text says "As long as Chinese were content with jobs few white men wanted, then the whites  ignored them. But as soon as Chinese landed better jobs or ventured into more attractive  industries then trouble brewed, especially during hard economic times. Whites feared  employers would use the Chinese to drive down wages and reduce whites to a status no  higher than that of the Chinese workers themselves."Otherwise, whites were sometimes actually doing some awful things to Chinese workers.