Choices are the potential answers you wish people to score for your question. Examples: "Who is the best Soccer Player Ever?" might have Choice 1: Pele, Choice 2: Diego Maradona, Choice 3: Lionel Messi, Choice 4: Cristiano Ronaldo. Questions work best with 2-6 potential Choices.
Factors are scored for each choice to decide who is your winner for that question. So for the question "Who is the Best Soccer Player Ever?" the Factors might be Factor 1: Goalscoring, Factor 2: Teamwork, Factor 3: Trophies Won, Factor 4: Popularity, Factor 5: Consistency and Longevity. Questions work best with 3-6 Factors to score.