The answer to this question is <span>The alphabet it has all of those and none at the same time</span>
To my mind, the correct answer is “to help the reader understand how the fuel system on a spacecraft works to help the reader understand the difficult decisions faced by Mission Control”. The aim of including a problem-solution text structure is to organize the author´s ideas in a way that helps the audience to gain understanding of the text. In addition, this device is very useful to call the attention of the audience and to make the text more appealing to them.
The line in the excerpt from Arthur Conan Doyle's "The contest" which suggest that Emperor Nero was ruthless and the line is this one <span>“Quick, Policles, quick!” he cried. “My pony is tethered behind yonder grove. A grey he is, with red trappings. </span>Get you gone as hard as hoof will bear you, for if you are taken you will have no easy death.”
“No easy death! What mean you, Metas? Who is the fellow?”
<span>“Great Jupiter! did you not know? Where have you lived? <span>It is Nero the Emperor! Never would he pardon what you have said about his voice. </span>Quick, man, quick, or the guards will be at your heels!”</span>
