agriturismoipitti on "How to be sure to delete only the blog one would like to delete"

Hello, I am managing on wordpress 4 blogs that, as far as I understood, are all registered under one main user. I would like to delete one of these blogs, but I don't want to make a mistake and delete the wron one or all the content of the several blogs. If I go to the page "manage my blogs" and click on the blogs name that I want to delete can I click empty my blog from all the content and I'm sure that just the content of that blog is deleted? Or is there another procedure? The blogs I want to keep are Agriturismoipittiblog/eng Agriturismoipittiblog/de Agriturismoipittiblog/ita, The one I would like to delete is Agriturismo I Pitti . Thank you very very much for the help, and sorry for this may be silly question, but a mistake would be terrible for me.
Blog url: http://agriturismoipitti.wordpress.com/