A clinical trail
Clinical trials are research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans. These studies also may show which medical approaches work best for certain illnesses or groups of people. - Definition by <span>https://www.nhlbi.nih.gov/studies/clinicaltrials</span>
<u>Answer:
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The first out of the four common symptoms of addiction is 'compulsion', which is the overwhelming need to obtain and use the substance or engage in harmful behavior.
<u>Explanation:
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- Addiction is characterized by an inevitable need that is required to be fulfilled to stop feeling physically and mentally restless. An addiction is termed as hazardous because the restlessness caused out of it can sometimes prove fatal.
- Other than compulsion, there are three other common symptoms of the cycle of addiction which are namely uncontrolled behavior, undesired consequences, and denial.
