Which of the following statements correctly describes the economy of Japan?
A.
It is a command economy.
B.
The government has control over all businesses.
C.
It is a highly developed economy.
D.
It is one of the smallest economies in the world

C

Explanation:

The economy of Japan could be a extremely developed free-market economy. it's the third-largest within the world by nominal gross domestic product and therefore the fourth-largest by buying power parity (PPP). and is that the world's second largest developed economy. ... it's the world's second-largest foreign-exchange reserves value $1.3 trillion.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.