Final answer:
Without additional context or the rules of the game, it's impossible to determine whether Arturo or Brianna is correct about the use of nine cards, as only eight cards are mentioned. Diligence in claiming facts without sufficient information is necessary, especially in mathematics.
Step-by-step explanation:
To determine who is correct between Arturo and Brianna regarding the use of nine cards, we need more context or specific rules related to the activity they are engaged in. Since the given information indicates that there are only eight cards (five green and three yellow), the question may contain a mistake or it is incomplete.
If the activity allows the use of all cards in a set, and there are indeed only eight cards to consider, then Brianna's claim that the most you can use is eight would be accurate. Arturo's statement about using all nine cards cannot be validated without further details.
Regarding the collaborative exercise with dice rolling, there is again not enough information about the rules or objectives to determine what Player A and Player B are likely to do. The same applies to the ultimatum game without knowing the specific details about the game situation.
Lastly, 'Thinking like a philosopher' requires verification of online claims, but since no screenshot or headline is provided, we cannot proceed to assess the claims or verify the photo of Mexico's border wall.