What is casa in English?

Which one of the following is the correct rhyme to keep in mind when using the spanish counterparts to this, that, those and these? a: “that” and “those” both have s’s, “this” and “these” don’t b: “that” and “those” both have t’s, “this” and “these” don’t c: “this” and “these” both have s’s, “that” and “those” don’t d: “this” and “these” both have t’s, “that” and “those” don’t

Decide if the following sentence is grammatically correct or incorrect. pon las flores en la mesa. correct incorrect

Best spanish translation they are happy. esta feliz. estan felices somos felices son feliz