Answer:
A. a primary source, because it is an excerpt of a radio address given by the president
Explanation:
The above excerpt is actually "a primary source, because it is an excerpt of a radio address given by the president".
Primary sources are materials which have first-hand information. It gives a direct account of the person involved or an event the person carried out.
The "radio address" of the president is actually an original work which makes it a primary source because it gives direct account of the president's speech.
Examples of primary sources include: letters, speeches, records, autobiographies, manuscripts, etc.
Answer:
The three largest and most prominent tribes in mississippi were the Natchez, the Choctaw and the Chickasaw.
Explanation:
I think the answer would be a secret ballot.
Answer: Wendy did not use random assignment
Explanation: Wendy's failure to randomly assign participants or subject to his research will pose a threat to the internal validity of his study. The internal validity of a study simply refers to the structure of an experiment and it's trustworthiness in establishing causal relationship between the applied treatment used a study and the observed outcome. Wendy's decision to ignore random assignment and opt for a manual assignment of subject to each treatment will pose a threat to the structure of his study and hence the establishment of a causal relationship between the treatment t and outcome of the study.
