When something is unique ,it stands out from its context
If you're planning to succeed at something, then the plan will include your progress as well as the best way to achieve the goal.
I think the analogy is going for opposites (the opposite of sound is silence) and so I would think that the opposite of "effective" would be "ineffective." In regard to an argument or statement, you could also use the word "weak."
Answer: An independent clause
Explanation: An independent clause is a group of words that contains both a subject and a predicate . It expresses a complete thought and can stand alone as a sentence. It can also be joined to other dependent or independent clauses to make a more interesting and complex sentence.
