Answer:
Water because it's a neccessity
Explanation:
All neccessaties have inelastic demand because humans can't live without them.
The other goods are luxuries and they have elastic demand. they are wants
What is the question you are asking?
Answer:
It could affect the way we face certain problems.
There will always be problems with the mixing of community.
Answer: Option 'a' is correct.
Explanation:
Researchers can isolate a single factor and examine the effect of that factor alone on a particular behavior through use of a choices is an experiment.
As experiment means when a hypothesis is tested scientifically and check when the cause is changed what would effect that factor alone.
whereas correlational study is the study of two variables understand it and develop the statistical relationship between them without affecting from any variable.
Hence, option 'a' is correct.
