President Andrew Johnson was impeached because he violated the Tenure of Office Act
Southern land owners replaced it with sharecropping.
The threat to validity that is likely to occur in the scenario above is Selection Bias.
<h3>What is Selection Bias?</h3>
This occurs when a researcher has control and intentionally chooses those who are going to be researched, observed, or studied. To eliminate this bias, the scientist must ensure that the sample population is selected very randomly.
Other threats to validity are:
- History
- Maturation
- Attrition
- Social Interaction
- Instrumentation
- Testing
- Regression to the mean, etc.
Please see the link below for more about Threat to Validity:
brainly.com/question/4168290
Answer: Option C
Explanation:
One of the main reason why we do maintenance or why we maintain the status of something is because of its values , we want to appreciate the value that is why we maintain properties and things pertaining to us.
To the question, relaying a well maintained yard will convey a general nature of externality of it for its value , a well maintained yard will beautify the surrounding buildings, of course we cant have a yard without a building, it beautifies a building, it showcases it real market value. In conclusion, a well maintained yard will increase a home market value to be appreciated.