Final answer:
The sales job could end up paying more than the marketing job if Roni does well and makes more than $10,000 in commissions.
Step-by-step explanation:
The answer to the question is A) The sales job could end up paying more than the marketing job if Roni does well and makes more than $10,000 in commissions.
This is because the sales position offers a base salary of $30,000 plus commissions, so if Roni performs well and earns more than $10,000 in commissions, their total earnings could exceed the $40,000 offered by the marketing assistant position.
It's important to note that this outcome is not guaranteed and depends on Roni's performance in the sales job.