Select the option that can be used as a one-word substitute for the underlined group of words.
"Rahul has done a study of statistics that contributed to the research."

Let's examine the meanings of the terms related to different studies/arts:
* Demography: The statistical study of human populations, especially with reference to size and density, distribution, and vital statistics. This fits the description of a study utilizing statistics.
* Choreography: The sequence of steps and movements in dance.
* Cartography: The science or practice of drawing maps.
* Cinematography: The art of making motion pictures.