To qualify to work in the United States, immigrant workers must obtain a visa.
Who are immigrant?
Immigrant are the newcomers in a foreign country.
What is a visa?
A visa is the authorization granted to a newcomer to enter a foreign country.
Because to qualify to work in united States , an immigrant must have visa, that is authorized by the United States to work and to live in the land of United States. Visa is like a official stamp that is authorized to an immigrant for various purpose like, travelling, working, study, without a visa one is not allowed to enter and work in the foreign country like United States. Visa provides an immigrant to seek for employment and even helps in seeking for permanent residence in the US.
Hence the correct option is, D. visa.
To know more about visa:
https://brainly.com/question/16554511
#SPJ2
