industrial nations
largely populated nations
small rural nations
If it is for Odesseyware the answer is all industrial nations.
Answer:
all industrial nations
Explanation:
B: it can be performed in natural settings.
C: it's environment is tightly controlled.
D: it requires setting up a hypothesis.
Answer:
I would say D
Explanation:
A doesn't make sense and you can do scientific investigation in natural settings and controlled settings making D the only answer left.
Answer:
D
Explanation: