Question

multiple-choice question
what is the experimental group?
the boats with no additives
the boats with different concentrations of additives
rewatch
submit

Explanation:

In an experiment, the experimental group is the one that receives the treatment (in this case, different concentrations of additives) to test the effect. The group with no additives is the control group. So the experimental group is the boats with different concentrations of additives.

Answer:

The boats with different concentrations of additives