Once more i need help It's the same paragragh/field trip except a different question
Field Trip to the Blacksmith Shop

Students at a middle school went to a local historical site on a field trip. While visiting the site they watched a demonstration in a blacksmith shop. Blacksmithing is the simplest form of forging and it is one of the methods by which metal was first worked. The metal to be forged is first heated to red heat in the fire of a forge, and then is beaten into shape on a metal anvil with sledges or hammers. Steel is used in the forging process. The material we call steel is a mixture of different metals. The element iron (Fe) makes up a large percentage of all steels, generally composing more than 75 percent of the mix by percent of total mass. Steel is made from iron, and in the process, some element percentages are reduced in the alloy composition (such as carbon and silicon), and other elements (such as chromium, nickel, and tungsten) are added, depending on the type of steel needed.

As the iron is worked on the anvil, the color changes from red to gray. Which of the following is happening to the molecules as the iron cools down?

The atoms move more slowly and closer together.

The atoms move more quickly and closer together.

The motion of the atoms stay mostly the same.

The motion of the atoms become very orderly.