Question

Cathy conducts a scientific investigation. How can she make sure her results are valid? A. repeat the investigation several times B. confirm that her results match her hypothesis C. write a report about her results D. use metric measuring units during her investigation Pls Help Me....... It's Science By the way.

Answer 1

the answer is A

Step-by-step explanation:

Answer 2

A. repeat the investigation several times. You must repeat an experiment to make sure it is valid.