Which is a compound sentence using a subordinating conjunction?

Most Brazilians, speaking Portuguese, have Indian or African customs.

Most Brazilians speak Portuguese, although many of their customs are Indian or African.

Most Brazilians speak Portuguese, but many of their customs are Indian or African.

Most Brazilians speak Portuguese; many of their customs are Indian or African.

Respuesta :

the third choice would be the correct answer because it uses the subordinating conjunction "although"

Example: Monica went shopping after she finished her homework. Note on punctuation: If the subordinating conjunction in a complex sentence is whereas, though, although, or even though, a comma is needed to show separation between the two clauses.