The answer is A. "the plans of march made by great generals in time of war." The plans they made wasn't as complicated like generals of war, it is an exaggeration.
An independent clause is found in a compound sentence and occurs when each clause can operate as a complete sentence in it's own right.
A subordinate clause adds information but does not serve as a sentence in it's own right for example, it relies on the main clause within the sentence to make sense.
The sentence you construct would be a compound sentence and would read:
The journalist met a source at the hotel SO THAT he would get the facts for an article.
Answer:
17. A
18. A.
19. C.
Explanation:
(correct me if I'm wrong)
Structure .. that is the correct answer