Based on projected increases in the number of older US citizens, a planning committee wants to establish a daycare program for the community's older adult population. During which stage is the need for this program to be assessed?
a. Inactive stage
b. Interactive stage
c. Preactive stage
d. Reactive stage

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b