Which of the following best defines biotechnology?

Biotechnology is best defined as the application of technology to biological systems. This definition encompasses a broad range of practices that utilize cellular and biomolecular processes to develop technologies and products that help improve our lives and the health of our planet.

This field integrates principles from various disciplines such as genetics, molecular biology, biochemistry, and engineering to manipulate living organisms or their components for useful purposes. This includes everything from agricultural developments, like genetically modified crops, to medical advancements, such as new drug therapies and diagnostic tools.

The other options, while related to the field of biotechnology, narrow the focus to specific aspects—chemical reactions in living organisms, vaccine creation, and genetic disorder analysis all fall within the wider domain of biotechnology but do not capture its overall scope and application. Thus, the most comprehensive definition is the one highlighting the application of technology to biological systems.