(NEED ASAP) A professional sports team wants to know what percent of the community are supporters of the team. Which sampling method be used to determine who supports the team?
A. Asking every 50th person at a home game.
B. Asking every 50th person shopping at the team store.
C. Asking every 50th person outside of a shopping center.
D. Asking every 50th person on the team's social media page.

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias