Answer:
The best answer option is B) working poor.
Step-by-step explanation:
The people who come under the category of working poor are those who are working or in search of work and their income falls below the specified poverty level, either due to work hours or the opportunity.
The majority of immigrants who moved to American cities aimed to gamble their luck and hoped that they will find a job in the recently established companies but very few among them proved to be lucky.