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.
With our senses, we pick up on the world around us and react accordingly.
Eyes- see our surrounding, be aware of our direction
Ears- hear other things, we are able to protect ourselves by sound
Nose- scent is least useful but could help us leave a poor situation
Touch- obvious one
Taste- ability to taste any harmful threats Ex. poison food
I am pretty sure it is D
I hope this helps you !!
