Correct option is A
The correct meaning of immigrants is (a).
Immigrant – A person who comes to live permanently in a foreign country. (प्रवासी)
Example: Many immigrants from war-affected regions seek asylum in Europe.
Meanings of other options:
· Option (b) – defines a tourist or visitor
· Option (c) – refers to a business traveller or migrant worker
· Option (d) – refers to an astronaut