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The main clause is "Chris's chief interest was tennis".
The subordinate clause is "Which he was just learning to play" and it is an adjective clause because it describes what the "tennis" was like. Tennis is an object and this subordinate clause further describes that it is the tennis that he was trying to learn.
The answer is c, in the passage it states how he cried when his mother died and his father sold him
Answer:
The absence of a "bill of rights" turned out to be an obstacle to the Constitution's ratification by the states. It would take four more years of intense debate before the new government's form would be resolved. The Federalists opposed including a bill of rights on the ground that it was unnecessary.
Complex (i think, hope this helps)