Science fiction creates an appetite for interstellar space exploration ... ...

Science fiction creates an appetite for interstellar space exploration among certain people. Unfortunately, this appetite cannot be satisfied with any technology humanity will soon possess. Since gaps between expectations and reality spur discontent, no doubt one effect of science fiction has been to create an unproductive dissatisfaction with the way the world actually is. Which one of the following is an assumption the argument requires?
(A) The fact that the appetite for interstellar space exploration cannot be satisfied with any technology humanity will soon possess has created a gap between reality and some people’s expectations.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2012 LSAT (PT67): Logical Reasoning B