Final answer:
2) Wanda has an existing contractual duty
Wanda has an existing contractual duty to prepare reports as part of her job with Humongous Corporation. Asking for an additional $500 a month is not automatically entitled, and unless both parties agree to amend the contract, the corporation is not obligated to pay this additional amount.
Step-by-step explanation:
When Wanda, who works for Humongous Corporation, asks for an additional $500 a month to prepare monthly reports, a few legal and contractual considerations come into play. To begin with, option 2) Wanda has an existing contractual duty to prepare the report is true. When Wanda was hired, it was understood that report preparation was part of her job duties.
As for option 1), while $500 a month can be a sufficient consideration for a new or amended contract, it's not automatically owed to Wanda under her current contract. It would only be sufficient consideration if Humongous Corporation agrees to a new term in Wanda's contract.
Option 3) Humongous must pay Wanda the $500 a month, is not necessarily true. Employment contracts can be renegotiated, but unless both parties agree to new terms, the employer is not obligated to pay additional compensation for duties already within the scope of the existing contract.
Lastly, option 4) Wanda is using undue influence to gain a $500 a month benefit she is not entitled to receive, cannot be determined solely from the information given. Undue influence involves improper pressure or coercion, which isn't implied in the scenario provided. For it to be undue influence, there would have to be proof that Wanda used her position or relationship to unduly coerce Humongous Corporation to pay her extra, beyond simply asking for a raise.