C. There are already enough stem cells
I believe it was George W. Bush.
Answer: experience sampling method
The experience sampling method is also known as the daily diary method. This involves asking participants about their thoughts, feelings and behaviours multiple times over a period of time. It is important that these results are recorded at that exact moment. This is often done through the use of a diary.
One consequence of falling birth rates is that the society will be getting older (on average) and less people will contibute to taxes, but more people will require pension money - which will be hard on the economy.
This might be connected to an increase in immigration to have more people fill in the positions and a slight cultural shift.
