3. Asexual
4.
5. multicellular
6. specialize
7.
8.
9. Sexual
12. Glucose
15.
The answer is personal experiences, for this term is the most important aspect if defining psychology, according to psychologist. It is because personal experience is one of the factors of having to determine things of how psychology will likely occur or what will likely trigger and help in studying it.
The alternatives here are the command economy and a (pure) market economy.
The US economy is not a comman market economy because most of it is not centrally planned, as was the case in the Soviet Union.
However, The US economy is not a pure market economy because some of it is centrally regulated, for example certain substances are forbidden.
I believe the answer is D :)