Four wrestlers step on a scale for a tournament. Wrestler A weighs in at 170 pounds; wrestler B weighs in at 168 pounds; wrestler C weighs in at 171 pounds; and wrestler D weighs in at 169 pounds. Which of these wrestlers experiences the greatest force due to gravity?

The force due to gravity experienced by an object is directly proportional to its mass. In this case, all wrestlers are on the same scale, meaning they experience the same gravitational acceleration. Therefore, the wrestler with the highest mass, wrestler C weighing 171 pounds, will experience the greatest force due to gravity.