Assume that your energy cost of foraging is 300 kcal/hour above your basal metabolic rate of 100 kcal/hour. (Assume also when you are NOT foraging, you are resting). On average, while foraging, you procure 1,500 kcal/hour. How many hours per day do you need to forage to break even? If, instead, you forage for twice this duration (and eat all that you procure), approximately how many grams of fat would you store each day?

8 hours; 100 grams

2 hours; 250 grams

4 hours; 250 grams