Question

what is the primary purpose of identifying independent and dependent variables in an experiment?
to make the experiment more interesting
to ensure the experiment is conducted quickly
to produce valid results by controlling variables
to increase the number of variables tested

Explanation:

Identifying independent and dependent variables helps in controlling what is changed (independent) and what is measured (dependent). This control is crucial for producing valid results as it allows for isolating the effect of the independent variable on the dependent one.

Answer:

To produce valid results by controlling variables