Note that normal probability plots C and D have a slight stepwise pattern. Why do you think this is the case?

Histogram of female bii.di Normal Q-Q Plot A Frequency 10 20 30 40 50 60 1 Sample Quanties 1 2 -1 0 2 3 sdat Theoretical Quantiles Histogram of female elb.di Normal Q-Q Plot B 8 FOOD 12 Frequency 10 20 30 40 Sample Quantiles -3 -2 -1 DOO -1 0 1 2 -2 0 1 sdat Theoretical Quantiles Histogram of general age Normal Q-Q Plot C Frequency - Sample Quantiles T -1 0 1 2 3 1 2 sdat Theoretical Quantiles Histogram of female che.de Normal Q-Q Plot D 40 50 60 Frequency 10 20 TTT Sample Quantiles T 1 T T 1 T T 1 -1 T 3 -2 0 1 2 3 4 -2 -1 0 1 2 sdat Theoretical Quantiles Histogram of female bii.di Normal Q-Q Plot A Frequency 10 20 30 40 50 60 1 Sample Quanties 1 2 -1 0 2 3 sdat Theoretical Quantiles Histogram of female elb.di Normal Q-Q Plot B 8 FOOD 12 Frequency 10 20 30 40 Sample Quantiles -3 -2 -1 DOO -1 0 1 2 -2 0 1 sdat Theoretical Quantiles Histogram of general age Normal Q-Q Plot C Frequency - Sample Quantiles T -1 0 1 2 3 1 2 sdat Theoretical Quantiles Histogram of female che.de Normal Q-Q Plot D 40 50 60 Frequency 10 20 TTT Sample Quantiles T 1 T T 1 T T 1 -1 T 3 -2 0 1 2 3 4 -2 -1 0 1 2 sdat Theoretical Quantiles