Question

Which of the following decreases the reliability of results from a clinical trial?

A. An obsolete medical treatment
B. A double-blind technique
C. A short observation period
D. A voluntary enrollment plan

Answer 1

C. A short observation period

Step-by-step explanation:

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Answer 2

The best answer to the question states above is letter C. A short observation period.
A scientist's primary concern in a clinical trial is the patient's safety, there fore short observation decreases the reliability of results from a clinical trial