If the story you are referring to is "The Great Gatsby", it might be said that Nick learned that she is a dishonest woman because she cheated to win the golf tournament. She might be considered a compulsive liar and she seemed to assume that everyone was like her,
we know that
The word odometer derives from the Greek hodós, which means "trajectory", "way" or "measure". An odometer is a device used to measure the distance traveled by a car. The result of this measurement appears on the instrument panel of your car and can be mechanical or digital.
see the attached figure to better understand the question
therefore
the answer is the option
A. total number of miles your car has been driven
I would say the correct answer is that has an undetermined answer.
If a subject has been thoroughly covered, then there is no need for this researcher to do it all over again. If it's impossible to answer, there is no need to try. If it can be answered easily, then it doesn't really require a research. This leaves us with the last option, because a researcher might want to try and determine the answer.