What are descriptive statistics

A)  numerical indexes of the degree of relationship between two variables 
B)  indicators of the probability that the observed findings are due to chance 
C)  calculations used to organize and summarize data 
D)  summaries used to interpret data and draw conclusions

Descriptive statistics are calculations used to organize and summarize data. They include measures of central tendency (e.g., mean, median, mode) and measures of variability (e.g., range, variance, standard deviation). Descriptive statistics are used to provide a summary of the data and to describe patterns or relationships in the data. They do not provide information about the probability that the findings are due to chance (which is addressed by inferential statistics) or the degree of relationship between two variables (which is addressed by correlation and regression analyses). Descriptive statistics can be used to interpret data and draw conclusions about the characteristics of the population being studied.