Which option most likely describes scientist(s) working in pure science?

A quality assurance inspector examining the contents of large tanks used to make fermented products.
Two scientists in a lab examining vials of urine they are analyzing for levels of excreted protein.
Three engineers standing in a field examining a set of design plans for future wind turbines.
Two inspectors at a water filtration plant examining the transparency and clarity of a sample of a water.

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Two scientists in a lab examining vials of urine they are analyzing for levels of excreted protein.

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The option that most likely describes scientists working in pure science is "Two scientists in a lab examining vials of urine they are analyzing for levels of excreted protein."

Pure science, also known as basic or fundamental science, is focused on expanding knowledge and understanding of the natural world without any immediate practical application or commercial goal. It involves conducting research and experiments to uncover underlying principles, theories, and laws.

In the given options, the two scientists in the lab analyzing urine samples are engaged in a scientific investigation. They are conducting experiments to measure the levels of excreted protein, which could contribute to our understanding of various biological processes and potentially lead to advancements in medical research or diagnostics.

While the other options involve professionals inspecting, examining, or designing products and structures, they are more aligned with applied science or engineering rather than pure science. These activities are more focused on practical applications and immediate use rather than on expanding scientific knowledge and theory.

Well, which are scientists?