Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Millions of Americans are recording their workout routines and activities on apps that are giving fitness experts new insights into the habits of a logged-in population. Data compiled by fitness and workout tracker apps, MyFitnessPal and MapMyFitness, show that California, Colorado and Washington are the U.S. states with the most active residents based on the length, frequency and type of exercise they recorded. South Carolina, Delaware and North Dakota are at the other end of the spectrum in the ranking. 'Seven of our top 10 active states were western states,' said Rebecca Silliman of MyFitnessPal, which analyzed information recorded by its 65 million users.Rankings were compiled using data submitted to the MyFitnessPal and MapMyFitness appsThe District of Columbia, North Dakota and Delaware are the states with the least active residents 
 Question:_' 25 million users to rank the states according to.

MapMyFitness