Scientists use critical thinking skills throughout the process of research or experimentation. a student notices that their energy level always seems to decrease when they drink soda, but they seem to have more energy when they don’t drink soda. the student decides to conduct an experiment to determine if their soda intake really does have an effect on their energy level. what critical thinking step has the student just completed in the situation described above?

a.
asking a question
b.
evaluating a promotional claim
c.
adjusting a conclusion
d.
determining a logical conclusion