Final answer:
If Jen consumes 7000 excess calories in a week, she would gain 2 pounds option (c), as each 3500 excess calories result in a gain of one pound of weight.
Step-by-step explanation:
Jen consumes 7000 calories per week in excess of her energy expenditure. To determine how much weight Jen would gain in a week, we need to know that an accumulation of an extra 3500 calories adds one pound of weight. Therefore, if Jen is consuming 7000 excess calories in a week, she would gain:
7000 calories / 3500 calories per pound = 2 pounds.
The correct answer to the question is (c) 2 pounds.