Answer:
The main threat to internal validity here is History.
Explanation:
Internal validity refers to how well a research is conducted. Internal validity determines if it's the independent variable (or another factor) that caused or resulted in the change in the dependent variable.
History here alludes to the internal validity threat that refers to events outside of the experimental setting (increase in cigarette taxes) that may affect the dependent variable (smoking cessation).
Answer:
the correct answer is indeed D
Explanation:
trust me !
We have a popular social networking website trying to employ changes to its platform. In order to gauge the response of the target audience, answer is E. where the release should be given to a small number of random members of target audience to minimize risk of loosing other audience.
Answer:
A. Forests help the environment by soaking up carbon dioxide, conserving soil, and preventing flooding
Explanation:
The answer could vary in terms that the context of the entire reading is unknown. However, based on the general position of the importance of forests, they contribute an extremely important percentage for the benefit of the environment; to mention, cities emit 70% of the world's carbon dioxide, forests favor basins for freshwater production, and strengthen the soil for agriculture.
England
Explanation:
It was named after the Duke Of York
