Final answer:
Using productive 'i' messages is the positive communication method that best describes a conversation that begins by assuring everyone involved that all feelings and thoughts can be safely expressed without fear of rejection or dismissal.
Step-by-step explanation:
The positive communication method that best describes a conversation beginning by assuring everyone involved that all feelings and thoughts can be safely expressed without fear of rejection or dismissal is using productive 'i' messages.
This method encourages individuals to express their thoughts and feelings by using 'I' statements that focus on their own perspective rather than blaming or criticizing others. By using this method, people can communicate their needs and concerns in a non-threatening way, promoting open and honest dialogue.
For example, instead of saying, 'You always ignore my ideas,' a person can use a productive 'i' message and say, 'I feel unheard when my ideas are not acknowledged.'