Answer:
This is an example of an experimental design.
Explanation:
Experimental design in research involves controlling the variables in order to prove the hypothesis. In an experimental design there must be an experimental group, that in this case is the group that received an herbal supplement, and a control group, that was only administered placebo. By having a control group, both groups can be measured and compared at the end of the experimental phase, to measure the influence of the independent variable.
in the three months to February 2017 there were 33.4 million people in the UK labour force and 1.56 million people classed as unemployed. These figures gave an official UK unemployment rate of 4.7%.
I would go with 50 since according to recent statistics %47 percent of Africans already live in an urban environment. Could the question be outdated?
Like most other countries the basic needs like farming and trading.
