Sure, I can explain search engine optimization (SEO) to you grandmother!
SEO is like making a recipe for a cake that everyone likes. Imagine you have a recipe book and you want your recipe to be on the first page of the book because most people look at the first page for recipes. SEO is the process of making your recipe (website) look more attractive to the people who decide which recipes go on the first page.
Just like how you would make sure your cake recipe has the right ingredients, is easy to follow, and looks good, SEO involves making sure your website has the right words and information that people are searching for, is easy to use, and looks good too. By doing this, search engines like Google can find your website more easily and show it to more people who are searching for things related to your website.
So, in short, SEO is like baking a cake - you need the right ingredients, the right steps, and a good presentation to make it appealing to others, in this case, search engines and people searching for information online.