Question

1. if a scientist has an idea that she wants to test in an experiment, what does she have? an observation a hypothesis criteria a theory

Explanation:

In the scientific method, an idea that a scientist wants to test through an experiment is called a hypothesis. An observation is something noticed, criteria are standards, and a theory is a well - established explanation. A hypothesis is a proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Answer:

B. a hypothesis