Nanotechnology involves the ability to see and control individual atoms and molecules. It is science and engineering conducted at the nanoscale, which is about 1 to 100 nanometers. It’s hard to imagine just how small nanotechnology is. One nanometer is a billionth of a meter. Consider the following: There are 25,400,000 nanometers in an inch. A sheet of newspaper is about 100,000 nanometers thick. If a marble were a nanometer, then one meter would be the size of the Earth. Which of the following best explains how text structure is used here? Select one:

to state a problem and explain how that problem is solved

to present information that helps the reader understand a concept

to make a link between two ideas

to list a series of steps in a procedure