A scientist claims to be a solid-state physicist. She is working on electromagnetics and trying to see if she can create an electromagnetic field by causing different solutions to flow through a tube. Is this scientist a solid-state physicist? no, because she is working in electromagnetics, which is not a solid-state field
no, because she is not working on the atomic structures of a solid
yes, because she is working in electromagnetics, which is a solid-state field
yes, because she is causing solutions to flow through a tube

The correct answer is B. No, because she is not working on the atomic structures of a solid

Explanation:

Solid-state physics is a sub-discipline of physics that focuses on studying solids, this includes analyzing solids structures, features, and other phenomena that occur in substances in this state of the matter. This means a solid-state physics will not study or gases.

In this context, the fact the scientist is trying to create an electromagnetic field by using solutions and the flow of these show the scientists is not working with solids but with liquids or gases as solids do not flow. Also, her focus is not solids, and therefore she is not a solid-state physicist. Thus, it can be concluded she is not a solid-state physicists because she is not working on the structures of solids.

i think the answer is a, hope this is right, that would be my best guess.