Answer :
The words that could replace the subordinating conjunction in the sentence while maintaining its original structure is option b. because and option d. since.
What is a conjunction?
A Conjunctions is seen as words that is known to be able to join together other words or set of words.
Note that A coordinating conjunction links words, phrases, and that of a clauses and as such, The words that could replace the subordinating conjunction in the sentence while maintaining its original structure is option b. because and option d. since.
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