Question

Read the scenario.

A group of scientists decides to conduct research to see whether access to a higher amount of a certain vitamin will improve the health of lab rats. They raise more than 500 rats, giving some the extra vitamin and some not, and keep track of how often the rats are sick and how long they live. The scientists’ findings are positive; the rats are healthier and live longer when they have access to the vitamin.

Which option correctly identifies why this research was scientific?

1. The scientists’ question was testable, and their claim was based on evidence.The scientists’ question was testable, and their claim was based on evidence.

2. The research topic was generally important for people and could increase the quality of life for many.The research topic was generally important for people and could increase the quality of life for many.

3. The scientists used proper ethical guidelines while performing their research.The scientists used proper ethical guidelines while performing their research.

4. The scientists researched a common situation and came to an interesting conclusion.

Answer 1

The research was scientific because the scientists asked a testable question and their claim was supported by evidence. Therefore, the correct option is 1.

Step-by-step explanation:

The correct option that identifies why this research was scientific is option 1. The scientists' question was testable, and their claim was based on evidence. In this scenario, the scientists conducted an experiment by giving some lab rats a higher amount of a certain vitamin and some rats not. They then tracked the rats' health and lifespan. By comparing the rats with access to the vitamin and those without, the scientists were able to generate evidence that supported their claim that the vitamin improved the rats' health and longevity.