Answer: Participant observation
Explanation: observation gives the researcher the opportunity to monitor the natural behaviour of its target population.
Normally, the study population does not know that they are being observed to avoid any bias due to change in behavior.
During observation, the data is collected using a checklist.
I think the correct answer from the choices listed above is option C. <span>A </span>hyperextension<span> or back extension is an exercise that works the lower back as well as the mid and upper back, specifically the erector spinae. Therefore, </span><span>Standing up straight and leaning backwards is an example of hyperextension.</span>
Due to immigration, intermarriage, and multiracial identity, the United States is more racially and ethnically diverse than at any other time in its history.
Since 1970, the numbers of Latinos and Asians have more than tripled, making Latinos the largest racial/ethnic minority group and Asians the fastest-growing group in the nation.
An expanding multiracial population and rising intermarried rates are two more factors in America's emerging diversity.
Intermarriage increased more than twenty-fold between 1960 and 2000, and by 2050 and 2100, one in five Americans and one in three are expected to be multiracial.
This growing variety, meanwhile, is not equally perceptible across the nation.
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