Question

select the correct answer from the drop-down menu.
a company wants to try out two new toothpaste brands (brand a and brand b) on customers who use the company’s existing toothpaste brand. the best method for this study is
options: a survey, an experiment, observation

Explanation:

To determine the best study method, we analyze each option:

• A survey collects opinions/responses, not suitable for testing product effectiveness.
• An experiment involves manipulating variables (here, testing two toothpaste brands on customers) to observe outcomes, which fits the company’s goal of trying out new brands.
• Observation just watches without intervention, not ideal for testing product use. So "an experiment" is best.

Answer:

an experiment