hello there! :)
you can use formal diction when you want to entertain, amuse, inform, or plead someone. words chosen to impart a particular effect on the reader reflect and sustain the writer's purpose. if your purpose is to inform, the reader should expect straightforward diction.
<em>hope this helps! comment down below my answer if you want any futher help❤ from peachimin (aka kayla)</em>
One effective method for decoding the definition of cardio respiratory, or any word, is looking at the root word. Cardio is Greek, and refers to the heart. Respiratory refers to breathing, which involves the lungs. So, cardio respiratory is the action of both the heart and the lungs.
Could you elaborate on your question
who your writing why your writing to this person and what you are going to write about
