It is important for a person to include
a. inactivity in their week
b. activities of daily living in their week
c. planned exercise activities in their week
d. all of the above

It would not be A, because you need activity in your week to stay healthy.

It would no be D, because that's counting A.

It would either be B or C, and I'd go with C, because daily activities may not be enough exercise.

So the answer is C, I hope this helps & is correct.