Answer:
C. The plastic handle, because its electrons don't move freely
Explanation:
Free electrons can move through the material much as air moves through loose sand. The water inside the vegetables or human skin is not very good insulation because it's water, if you were to take a warm shower and then come out, you would feel very cold.
Answer:
I believe it would be C because there was las casas who saw the torture of the NAtives and in order to see that, he had to sail with Columbus.
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.
