Leader. This is probably the word your looking for.
Hope this helps.
~Fluerie
Answer:
It would show that you didn't just read something from one source and believed it. When researching it is good to read around and see different results or if the information may be the close to what you gathered elswhere etc.
<span>When disaster struck, something was wrong with the aircraft—he kept a cool head.
I believe this is the correct way.</span>
Answer:
It gives the passage a hopeful tone because it expresses how hope can come back to life.
Explanation: