Answer:
Yes
Explanation:
Yes, there is the presence of a threat.
This threat is known as instrumentation. There is an Instrumentation threat when changes are made in the instrument, or the changes are made in the researcher, or the scorer when the research is being carried out.
In this question, mrs smith is the one who is the researcher, the program of reinforcement can be called the instrument. She made errors during the first few week but started getting it right in the second week. So there is a slight change in these two weeks. Causing instrumentation threat to how valid the program is.
Answer:
D. The US economy is the largest in the world when measured in GDP per person.
Explanation:
Answer:
The Butter Battle Book is an allegory for the nuclear arms race and the state of mutually assured destruction (MAD) that occurred during the Cold War. This story thus lends itself to a discussion with children about the concept of war itself, the moral issues related to war, and the outcomes of retaliatory acts.
Explanation:
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