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.
If you have an addiction with smoking I would say vaping
Let's start from the beginning.
Ultrasounds are a type of radiology equipment. Ultrasounds(sonography) can be used to see images inside of the body, including kidneys, uterus and many other internal organs.
Ultrasounds are commonly used for pregnant individuals.another common use is to ee the brain and hips in infants
There can be many complications in a pregnancy. Ultrasounds can determine the sex of the fetus, see if there are amino bands around the limbs( which can cause limbs to fall off, etc. Most ob/gyns want to keep the pregnant individual calm and healthy as well of the fetus.
His skin was the line of defense that was broken. Hope this helps.
