Answer:
separating clause in a a compound sentence with a coordinating conjunction.
Comma should not be used in case of -
Separating clauses in compound sentence with a coordinating conjunction
Conjunctions are words used to connect clauses or sentences; like - and, but, or etc.
Conjunctions in themselves signify a pause & connection, comma need & should not be used with them.
However, for all other following options, a comma is needed -
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