Answer:
Choice D
Explanation:
Basically, the difference between a short term goal and long term goal is the time it takes to accomplish each. Whilst a short term goal can take days or weeks to accomplish, a long term goal can take months or even years.
The correct answer is A.
<u>The dependent variable is:</u><u> how long students worked on the math problem.</u> Secondly, the goal of the study is to assess whether an explanatory variable (the confort of chairs) does have a causal effect on the lenght of math study or not.
As it is described in the question, the explanatory variable is a binary one: it takes value equal to 1 for the group seated in padded, comfortable chairs, and value 0 for the individuals in the group with standard chairs. Therefore, the study can be understood as the assesment on the validity of a treatment, on its capacity to make a difference on the dependent variable.
Answer: I'm pretty sure the answer is B prevented the federal government from interfering with state laws.
The system that is affected is the skeletal system
