Which of the following are examples of specialization? check all that apply.
a. victor is a musician. he hires a domestic worker to clean his apartment twice a week so that he can concentrate on composing music.
b. akshay writes well, and eleanor is an expert on health; therefore, akshay writes novels, and eleanor is a nutritionist.
c. felix and megan each spend half the day tutoring and half the day grading papers.
d. in between tutoring and grading papers, they each must spend an hour driving home from the tutoring center and getting set up for grading papers.