Please use R programming to solve this problem

Please download the R data file "Questions.RData" from : https://drive.google.com/file/d/1oNenhD1ZmbgLdk4lOKY9Ew_q0uJ_sQyO/view?usp=sharing

A data frame "decathlon" is available in R data file "Questions.RData". This data frame stores athletes' performance in decathlon during two sporting events (2004 Olympic Game and 2004 Decastar). The first ten columns record the performance of the athletes for the 10 events of the decathlon. The columns 11 and 12 correspond respectively to the rank and the points obtained. The last column is a categorical variable indicating the sporting event.

By R programming, use corrplot function to draw a color graph of the rotation matrix with the rows rearranged in ascending order of the values in the first column (see below figure). What does the first principal component measure?