What scientist do that is the basis for their investigation

Basically, they will use the steps in the scientific method, they will repeat from the beginning if the experiment is not as expected

Experiments carried out by a scientist are based on their thinking about a problem.

This problem is derived from what they experience themselves or come from the research of other scientists.

A scientist must use a specific method or technique in accordance with their competence in their respective fields of expertise.

In general they will use scientific methods that have become a general guide for scientists or even a student

This scientific method consists of several stages, namely:

1. Observation,

2. Determine the problem

2. Data, collect information

3. Hypothesis

4. Experiments

5. Analysis

6. Conclusion

7. Compilation of laws or theories

Basically they will use the steps above, if in a certain stage there is a failure they will repeat it from the beginning

In general, each study will follow one or several objects to get a conclusion in the form of problem solving which later might be a theory or law

The basic stages of a research will determine the success of a study

the steps of the scientific method. link

Scientists use experiments and observations to make logical conclusions about scientific inquiries link

The experiment fails to disprove a hypothesis link

the titration experiment link

the correct answer would be d. hope this !