"Dreaming" does usually not improve sales.
Student or Learner
After attending the seminar on “The Power of (Dreaming/Persuasion)” the sales team increased their sales by 75%.
The answer here is "Persuasion". However, does "The Power of Dreaming" work in some context? I usually hear "The Power of Dreams" not "Dreaming".
It's not a particularly good question, though.