The correct answer is Ser Bueno because seas,ses, and sea is referring to different talking methods like talking to someone or talking about your day and in this case ser is the most appropriate answer Hope this has helped
<span><em>~de qué estás hablando</em> how to say it: de: <em>day</em> qué: <em>K</em> </span>estás: <span><em>es-stas </em> </span>hablando: <em>hey-bland-o</em> <em>~Hope this helped! :)</em>
