Final answer:
Without the specific formula or 'life lines' provided for reference, we cannot calculate the exact BMR for Jack and Jill. However, we know that Jack likely has a higher BMR than Jill due to factors like gender, greater weight, and larger body surface area.
Step-by-step explanation:
To determine Jack and Jill's Basal Metabolic Rate (BMR), we need to consider various factors, including gender, weight, height, age, body surface area, and body fat percentage. Since the life lines are not mentioned, we cannot calculate the specific BMR values for Jack and Jill. However, we can note that because Jack has a greater body surface area and weight than Jill, he would likely have a higher BMR. Moreover, men typically have a higher BMR due to higher muscle mass and lower body fat percentage. Jill's BMR would be affected by her height, weight, and gender as well, potentially resulting in a lower BMR compared to Jack's. Lastly, age plays a role in BMR; as people age, their BMR slightly decreases.
We cannot provide an exact answer to which option (A, B, C, or D) is correct for Jack and Jill's BMR without the specific formula or 'life lines' as mentioned in the question.