The type of scientific thinking the scientist is using to make this inference is: B. Analyzing
Determining the type of thinking
The scientist is looking at the parts in the roots and learning how they go together.
This process involves looking at the different parts and how they are connected to each other. The scientist can figure out how roots work in taking in water and moving it to the rest of the plant by looking at and studying their shapes and parts.
Analyzing means taking apart complicated things or processes and figuring out how they work together to make something function or behave a certain way.