B = Be specific. Do not write something like “space flights.” Such a title doesn't give the information for what exactly your text is about. ...
Catch you reader. Even if your topic is specific, people would not like to read it if it doesn't spark any interest. ...
Use keywords in your title.
I would say B and C but I don’t know that for sure... but it makes the most sense.
The antagonist is the villain of the story and the protagonist is the hero.
The villain is almost always against the hero, so the correct answer is A.
The correct answer is C. T<span>he director appointed Cameron leader of his section.
In order to find the object complement (a word or phrase which completes an object), we first have to find the object. In sentence C, the object is Cameron (who did the director appoint? - Cameron). The phrase that completes the object and acts as its complement is leader of his section (What did he appoint Cameron as? - Leader of his section). As you can see, leader is a noun (as opposed to wise and stellar in sentences A and B which are adjectives), which means that C is correct.
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Function Analogy
:) Hope this helped.