1. This picture isn't clear enough to see the entirety of the questions.
2. It provided a link to use to find the answers, which usually means that the link it gave you has all the answers you need. Some answers may be implicit, but they are usually explicit.
I’m not 100% this is true but usual people who do drugs or drink alcohol as a diction so sexual intercourse can be taken in attic‘s mines as a addiction comment if you don’t understand please mark me a Brainlyist
False, crossover designs are not most useful when the underlying intensity of disease has substantial within-person variability, such as larger seasonal changes.
<h3>When is crossover designs most useful?</h3>
A crossover design is a repeated measurements design such that each experimental unit receives different treatments during the different time periods.
That is the patients cross over from one treatment to another during the course of the trial.
Thus, crossover designs are not most useful when the underlying intensity of disease has substantial within-person variability, such as larger seasonal changes.
Learn more about crossover designs here: brainly.com/question/28039233
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A is the answer i believe
