have a testable hypothesis. place the data in a graph. use the best technology. test multiple variables.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student conducts an investigation. In order to make a valid conclusion, she must
Possibilities:
- have a testable hypothesis.
- place the data in a graph.
- use the best technology.
- test multiple variables.

have a testable hypothesis.