Respuesta :
The correct answer is the last option, the word “which” is inserted to combine the two phrases.
This makes the sentence, Immigrants often styles in cities, WHICH were home to industry.
Hope this helps!
The sentence that combines both the sentences by inserting a word is:
Immigrants often settled in cities, which were home to industry.
'Which' is a relative pronoun and may introduce a subordinate clauses. Relative pronouns serve as the subject of subordinate clauses.
Combining sentences makes the sentence more concise and less repeatable by eliminating unnecessary words.
Know more about relative pronoun here
https://brainly.com/question/814678
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