this is the possible answer I could think of hope it help though :))))
Answer:
larger difference threshold
Explanation:
Based on the information provided within the question it can be said that this would indicate that Maria apparently has a larger difference threshold than does Jennifer. This term also known as the just noticeable difference (JND) refers to the minimum level of stimulation that an individual can detect 50% of the time. Which in this scenario would be the tone of the guitar strings.
