Answer: C) Larger difference
Explanation:
Difference threshold is noticeable difference usually 50% of time.It is describes as the lowest amount of alteration and change required in any object or thing to come in the notice of person .
Large difference threshold is noticeable difference requires more time to get noticed by an individual in a changed body .Thus, Maria's difference threshold is larger as compared to Jennifer as she is able to notice tone's sharpness relatively at slower rate.
Other options are incorrect because smaller difference is shown by Jennifer by detecting tone more rapidly than Maria. Absolute threshold is for the detection of stimulus that can come in notice by minimum simulation.Thus, the correct option is option(C).