Answer:
The third sentence is correct
Explanation:
All the things that are capitalized are correct
"the difficulty that both Chinese and Japanese immigrants face when they try to pass the immigration stations during that period is : Chinese and Japanese immigrants were restricted by law from entering united states"
"This was known as the exclusion act. The main purpose of this policy was to protect the job opportunities from the united states citizen that being threaten by the availability of cheap immigrant workers"
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. T<span>he tone of the section entitled "Billy Ansel" is best described as Frustrated and Determined. Hope this answers your question.</span>
maybe the author just want to keep that info secret and the story maybe not true at all so author doesn't want to tell readers, that what I think!