**Core Concept**
Good clinical practice (GCP) is a set of principles and guidelines for conducting clinical trials that ensure the rights, safety, and well-being of trial participants are protected. GCP is essential for maintaining the integrity of clinical trials and ensuring that research data are reliable and trustworthy.

**Why the Correct Answer is Right**
GCP is a regulatory requirement for clinical trials involving human subjects, as outlined in the International Conference on Harmonisation (ICH) Good Clinical Practice guidelines. This standard ensures that trials are conducted according to a protocol, with informed consent from participants, and that data are accurately recorded and reported. GCP also emphasizes the importance of monitoring and auditing trials to ensure compliance with regulatory requirements.

**Why Each Wrong Option is Incorrect**
**Option A:** While GCP is a key aspect of clinical trials, it is not exclusive to them. Other types of research studies, such as observational studies, may also require GCP principles to be applied.
**Option B:** GCP is not limited to pharmaceutical industry-sponsored trials. It applies to all clinical trials involving human subjects, regardless of the sponsor or funding source.
**Option C:** While GCP is a regulatory requirement, it is not a medical treatment or intervention. It is a set of guidelines for conducting clinical trials.

**Clinical Pearl / High-Yield Fact**
One key aspect of GCP is the requirement for informed consent from trial participants. This means that participants must be fully informed about the trial, including its purpose, risks, benefits, and alternatives, before giving their consent to participate.

**Correct Answer: B. GCP is not limited to pharmaceutical industry-sponsored trials. It applies to all clinical trials involving human subjects, regardless of the sponsor or funding source.**