Read the paragraph from the text.

After beachcombers find seashells, they can prevent unwanted odors by cleaning them. If they forget to do this, the smell will become unbearable within a few hours. The smell is not the only reason to clean newly found seashells. The colors of the shells do not look shiny and bright if they are not cleaned. A salty film or algae can greatly spoil the look of a seashell, but if the shell is washed, the natural color and shine will come back. If beachcombers follow these simple steps, they can enjoy their finds for years. To clean them, all they need to do is put some soap on a soft, wet sponge and scrub them. It is important that all the soap is washed off before drying the shells.

What is the author's purpose for including this paragraph in the text?
A
It teaches how to be respectful when beachcombing.

B
It explains a process that helps preserve seashells.

C
It tells that only seashells can be removed from the beach.

D
It shows why seashells do not last when they are removed from the beach.