this question is incomplete but I have added The Answer options to your question
a) He does not have a hypothesis.
b) He only has one group. He has not established a comparison
c) He has not measured an outcome.
d) The groups were not equal to begin with.
Answer:
b) He only has one group. He has not established a comparison
Explanation:
A randomized controlled experiment can be defined as an experiment that has two groups which it randomly assigns participants to.
These two groups are:
1.) the experimental group and
2.) The controlled group on whom the study is being performed.
Now Alberti does not have any of these groups we have listed. He performed the testing on the same people before they consumed alcohol and after they consumed alcohol. Therefore this study was not comparative in nature.
I believe the word your missing is "absolute" hope it helps:)
The answer is narcotic. It is any of a class of substances that limit the faculties, as opium, morphine, belladonna, and liquor, that in expansive amounts deliver elation, trance, or trance state, that when utilized continually can bring about habituation or enslavement, and that are utilized as a part of medication to alleviate torment, cause sedation, and instigate rest.
<span>The correct answer is D: all of the above. Pollution has many negative effects on both the human population and the environment. If the air and water is heavily polluted, it can contaminate the human population and cause illnesses and even death. It can also taint natural resources making them unusable</span>
