Answer:
The correct answer is The study has a problem with the External validity
Explanation:
External validity in research terms is the validity the research has in the outside world or in the applied social reality of the field of study, it is the extent in which the results and conclusions of the study can be applied and generalized to ohter external factors, therefore in this case, when the researchers did the experiment only with motivated volunteers did not take into account that people outside may not have the same motivation, therefore the results may not be the same in the external social reality and thus having problems with the external validity.
The Andes have had all of the given effects on the people except some native Indians have developed unusual physical characteristics that make it easier for them to live at high altitudes.
Option: D
Explanation:
Andes mountain a renowned fold mountain of South American continent. It is characterized by higher elevation and various relief features. Agriculture, mining both is prevalent in the surroundings of Andes mountain. Due to higher elevation terrace farming is followed. It is also rich source of minerals. The people who live there have adopted some physical features to sustain their lives over there. Andes is well connected with other neighboring states and urban area. Main indigenous people who live there are Inuits, Yupik and Aleuts.
Labor unions can increase wages through:
collective bargaining
Reducing supply of labor
and increasing demand for labor
In collective bargaining, the workers can send their representatives to negotiate new working terms with employers (including work hours and increasing wages).
Reducing supply of labor would make the existing laborers become more lucrative, rare and valued. This would resulted in an increase of workers' wages.,
Increasing demand for labor can be done by improving the members' skills through courses or seminar. By having additional skills, the members can be eligible to harder and more rare job opportunities. This usually correlate with higher wages
Education serves several functions for society. These include (a) socialization, (b) social integration, (c) social placement, and (d) social and cultural innovation.
