To identify potential new drugs

To determine the safety and efficacy of new drugs

To obtain regulatory approval for new drugs

To maximize the profits of pharmaceutical companies

Phase I, Phase II, and Phase III

Phase I, Phase II, and Phase IV

Phase II, Phase III, and Phase IV

Phase III, Phase IV, and Phase V

To evaluate the safety of a new drug in humans

To determine the efficacy of a new drug in humans

To compare the safety and efficacy of a new drug to an existing drug

To determine the long-term safety and efficacy of a new drug

To evaluate the safety of a new drug in humans

To determine the efficacy of a new drug in humans

To compare the safety and efficacy of a new drug to an existing drug

To determine the long-term safety and efficacy of a new drug

To evaluate the safety of a new drug in humans

To determine the efficacy of a new drug in humans

To compare the safety and efficacy of a new drug to an existing drug

To determine the long-term safety and efficacy of a new drug

To evaluate the safety of a new drug in humans

To determine the efficacy of a new drug in humans

To compare the safety and efficacy of a new drug to an existing drug

To determine the long-term safety and efficacy of a new drug

To regulate the development and approval of new drugs

To conduct clinical trials of new drugs

To provide funding for drug development and clinical trials

To educate the public about new drugs

To review and approve clinical trial protocols

To monitor the conduct of clinical trials

To ensure the safety of clinical trial participants

All of the above

The process by which clinical trial participants are informed about the risks and benefits of participating in a clinical trial

The process by which clinical trial participants agree to participate in a clinical trial

The process by which clinical trial participants are compensated for participating in a clinical trial

All of the above

Randomized controlled trials

Observational studies

Case-control studies

Cohort studies

In a randomized controlled trial, participants are randomly assigned to receive either the new drug or a placebo, while in an observational study, participants are not randomly assigned to receive either the new drug or a placebo

In a randomized controlled trial, participants are followed for a longer period of time than in an observational study

In a randomized controlled trial, participants are more likely to experience side effects from the new drug than in an observational study

All of the above

They provide the strongest evidence of the safety and efficacy of a new drug

They are less expensive than observational studies

They are more likely to be completed on time and within budget

All of the above

They can be expensive and time-consuming

They may not be feasible for all types of research questions

They may not be ethical in all cases

All of the above

The risk of harm to participants

The lack of informed consent

The exploitation of vulnerable populations

All of the above

By carefully designing clinical trials to minimize the risk of harm to participants

By obtaining informed consent from participants before they enroll in a clinical trial

By protecting the privacy of participants

All of the above