
Richard T. answered 04/18/16
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Patient and Intelligent Computer And English Tutor
This one is not about parallelism but of punctuation. Think about how you can determine where a comma should be put. If a word like "and" can be placed there, the comma probably fits.
"The evening church service was over and the family had returned home: and everyone was sitting around in the living room."
Does that seem to work out okay? If it does, then there should be a comma after the phrase. That means that either option a or b is correct.
Now look at what is the purpose of a colon. It is used to mark a major division in a sentence, to indicate that what follows is an elaboration, summation, implication. Where are colons normally used? Lists use them, right? "Bring me the following: bread, milk and eggs." Does the sentence look like it's listing something out? If it does, then option A is correct.
Finally, think of the use of a semicolon. That's used to combine two independent clauses together. It serves the same function as words like and, but, or. These words normally don't go together one after another and neither does a semicolon to these words. Is there a word like the ones afore mentioned in the sentence? If not, then option C could be correct.