The answer is D, since they say only a select few are and not the people as a whole.
A streak test. If you rub a mineral across a porcelain plate or tile you can examine the streak it leaves. This lets you identify the mineral you are rubbing.
Answer:
Tip #1: Set an end goal for yourself. ...
Tip #2: Write down all ideas. ...
Tip #3: Think about what interests you most. ...
Tip #4: Consider what you want the reader to get from your paper. ...
Tip #5: Try freewriting. ...
Tip #6: Draw a map of your ideas. ...
Tip #7: Enlist the help of others. ...
Tip #8: Find the perfect brainstorming spot
Explanation:
Mars is a planet (I’m not sure if that’s what you mean)