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:

"Run Out on the Rails" is an online article written by David Jepsen. It tells a story of a boy named Chapin who just moved to Tacoma. It also tackles on the reasons why there were anti-Chinese activities and why they were being expelled from the country.

The reason behind this, according to Richard White, was that the Chinese threatened the whites when it comes to economic security. The whites didn't mind the Chinese workers who were contented and happy doing jobs that few men wanted. However, they got angry finding out that the Chinese, later on, landed better jobs than the white. The whites thought that this could lower their status in the society, thereby lowering their wages too.

So, this explains the answer.