Answer:
Option A, Neither the researchers nor the study participants know who is receiving the drug and who is receiving the placebo.
Explanation:
In a double blind test, both the researcher and research participants are unaware of the exercise in a medical test . During the research active medication is given to some of the research participants making sure that researcher is unaware of that while observing all the participants. However, at the end of the experiment ,both the researcher and research participants get to know who has received the treatment.
Hence, option A is correct
The answer is D. By signaling for the body to increase fluid and sodium absorption
Evaporation and condensation play major roles in the Earth's water cycle and how it functions. When water evaporates from the ocean due to the sun's energy, it rises in the air and condenses as clouds. Wind carries these clouds over land and eventually these cloud condense more by starting to rain. Once the rain falls, it runs off, and some/most of it returns back to the ocean, where the cycle repeats again. Hope this helps!
I'm Pretty Sure The Answer Is A.
Answer: Neutron
Neutrons have no charge and are neutral
