Question

to each of three glasses and two tablespoons of salt to each of three other glasses. she added no salt to the final three glasses. every day for one week, she measured the amount of water left in each glass. complete the sentence. in this experiment, the glasses with tap water only were part of ________. a control group an experimental group

Explanation:

In scientific experiments, a control group is a set of subjects or samples that are not exposed to the variable being tested (here, salt). They serve as a baseline to compare against the groups that receive the variable (the glasses with salt). The glasses with only tap water fit this definition, as they are not modified with the experimental variable (salt) and are used for comparison.

Answer:

a control group