Which professional carries out research, collects samples, and performs experiments to report findings?

The correct answer is a biologist because this role is fundamentally focused on studying living organisms and their interactions within ecosystems. Biologists engage in research that involves collecting samples from various environments, conducting experiments to test hypotheses, and analyzing data to draw conclusions about biological processes and phenomena. Their work often leads to significant findings that can contribute to advancements in various fields such as medicine, environmental science, and genetics.

In contrast, while chemical engineers do conduct experiments and may be involved in research, their primary focus is on the design and development of processes for producing chemicals and materials, rather than on studying living organisms specifically. Medical technicians perform laboratory tests but typically work under the supervision of a physician and are not primarily responsible for conducting independent research. Physicians focus on diagnosing and treating patients, and while they may engage in clinical research, it is not their primary role to collect samples or perform experiments in the way that biologists do.