Answer:
ask everyone individually, and then record the information as a tally, then transfer the information to a bar graph.
Explanation:
if you ask everyone individually, then you are less likely to have people saying the same things as their friends, and if you tally it up, it would be easier to transfer your information to a graph. A bar graph would be ideal for this type of situation because it shows multiple options, and lets you input how many people chose each option.