What is defined as a description of medical techniques or practices supported by scientific evidence?

The term that accurately describes medical techniques or practices that are supported by scientific evidence is evidence-based. This concept emphasizes the importance of using the best available research, clinical expertise, and patient values to guide healthcare decisions. By relying on practices that have been studied and validated through research, healthcare professionals can ensure that the care they provide is effective, safe, and focused on the best outcomes for patients.

In contrast to this, personal protective equipment refers to gear used to protect health workers from exposure to hazards, while standard precautions are guidelines that recommend practices to prevent the transmission of infections. Contamination involves the presence of an undesirable substance or infectious agent. These definitions illustrate that the other choices relate to safety measures or protocols rather than representing a framework built upon scientific validation of medical practices.