Naomi will stretch each part if her body listed because 1/2 is less than 2/3. She will have stretched her neck once;
1/3 is less than 2/3. 1/3 + 1/3 is 2/3 so she would have stretched her arms twice;
1/6 is less than 2/3 and goes into 2/3 4 times so she would have stretched her legs 4 times.
Hope I helped!