Answer:
The answer for your question is A) Farmer
I believe the answer is: double-blind experiment
In double blind experiments, the subjects that receive the treatment is remained unknown by both the researchers and the subjects until the experiment is finished. The main purpose of double-blind experiment it eliminate the bias of perception that might exist among researchers.
The object must move with the speed of 
times to approximately seeing that it is contracted to exactly half of its actual length.
<h3>How is this calculated?</h3>
The length contraction experimented by the object as it approaches lightspeed, in meters per second, is described by Lorentz contraction formula:
Here, v is the current speed m/s
c is the speed of light in m/s
L' is the length of the object at rest in m
L is the length of the object at the current speed in m
Now we know that
and 
then,
Hence, r = 
Therefore, the answer is the object must travel at a speed of times the lightspeed to be contracted to one-half its proper length.
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Surely, when a living vertebrate is endothermic. it is <u>not possible</u> for that vertebrate to be a reptile.
<h3>What are vertebrates?</h3>
Vertebrates are those animals with backbone
So therefore, surely, when a living vertebrate is endothermic. it is not possible for that vertebrate to be a reptile
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Great Britain and France...... both suffered major losses in WWII and were allies of the United States. Supporting these two countries supported a halt to the spread of communism.
