Answer:
Using familiar words, occasional contractions, and pronouns such as you and I.
Explanation:
This is the best strategy in order to create a conversational but professional tone in letters, e-mail messages, instant messages and memos. This strategy suggests the use of familiar words. This will give a personal, relaxed tone to your texts. Moreover, it suggests the use of occasional contractions. Contractions are useful when it comes to making a text less formal and more intimate. Finally, using pronouns such as "you" and "I" gives a tone of closeness, while remaining professional.
