The answer would be It can be difficult to be different
The answer is d unless you messed up typing
B - too specific for the purpose
While that would be a good topic sentence, it is far too specific for the thesis of an entire essay
The best revision of the sentence that avoids the misconception is "Moreover, the constant exposure of ads is annoying" to avoid the misconception. The misconception that can happen here is the notion that the advertising is exposing someone. To eliminate this misconception, the sentence must be made<span> more effective. Thus, the revision above is the best way to avoid it.</span>