Final answer:
For lifting heavy bales of hay, Naomi requires static strength to exert the necessary force. Other abilities like perceptual speed, response time, and fine manipulative abilities are less critical for this task.
Step-by-step explanation:
From the scenario presented, when it comes to lifting heavy bales of hay into the back of a truck, the most relevant physical ability that Naomi would need is static strength. Static strength is the ability to exert force against an object, which would be necessary to lift and carry heavy items like hay bales. Abilities like perceptual speed, response time, and fine manipulative abilities are less relevant to this task, while depth perception could be beneficial but is not as critical as static strength for the actual lifting process. Naomi's high level of static strength would be most beneficial for the physical labor required on the farm.