Answer:Should be the clearest posible
Explanation:Dear student, generally when you are writting texts you must be clear in both your grammar and spelling, as well avoid using short forms of the English independently of the dialect.
When you are making spoken presentations, take your time to prepare your presentation and get ready when you present it. The are ways to help this like practicing in front of a mirror, talking with a friend requesting them to correct you if you miss something, and last but not least have faith in yourself.