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.
Cardiorespiratory endurance is a measurement of how well your heart, lungs and muscles work together to keep your body active over an extended period of time. Exercisers can improve cardiorespiratory endurance by participating in a program of regular aerobic exercise.
Tobacco is a recreational product that contains nicotine and harmine. It is generally prepared from the leaves. Tobacco use can cause lung cancer.
<h3>What is Lung cancer?</h3>
Lung cancer is a disease in which the cells of the lungs and the respiratory tract are seen to have uncontrolled abnormal growth and is the most common type of cancer.
It is caused due to the active and passive smoking of tobacco-related products and exposure to certain toxic chemicals. Smoking tobacco most likely causes mouth and lung cancer and breathing problems.
Therefore, tobacco causes option B. lung cancer.
Learn more about tobacco and lung cancer here:
brainly.com/question/10547641
On average an uninsured teeth cleaning is around $83 for an adult and $62 for a child.
