Chrissie shirks the additional work given to her this shows she lacks the trait of being responsible. The responsibility is the state of being responsible, accountable, and answerable for something within one's control, power and management. The responsible person will not neglect the task asign to him or her. The responsibility is a duty or obligation to perform the task satisfactorily.
After lifting weights for two weeks, Joe finds that the weights he has been lifting do not feel very heavy to him anymore. This is an example of Muscle adaptation principle - D.
