The question "What will I have to give up?" relates to . The question "What will I gain in return?" relates to . The amount of money a worker might make on a job in a year is a(n) . The potential earnings of becoming a doctor minus the cost of going to medical school is the

immediate cost, future benefit, salary, net benefit

Explanation:

The question "What will I have to give up?" relates to immediate cost.

The question "What will I gain in return?" relates to future benefits.

The amount of money a worker might make on a job in a year is a salary.

The potential earnings of becoming a doctor minus the cost of going to medical school is the net benefit.

Immediate cost is the money spent on doing something or acquire an asset while future benefits is the potential for a venture, an activity or asset to contribute to financial gains in the future.

Salary  is a fixed regular payment, mostly paid on a monthly basis but often expressed as an annual sum, made by an employer to an employee.

Net benefit is the summation of all the benefit accrued from a venture minus all expenses, it means the present value of the Covered Payments net of all expenses.