Answer:
C. Undue influence
Step-by-step explanation:
Undue influence in law of contract is when one uses his or her position to take advantage over another person. In undue influence, a person act not as a result of his or her will but due to inducement from another person.
With regards to the above case, Raylene took advantage of Seth due to her old age and her little relationship with people by inflating the price of real estate bought on her behalf and against her will.
It therefore means that Raylene may be liable for undue influence in a court of law.