Answer:
It depends on what you are talking about.
Digas and Dis is not right.
The best answers are: diga or decir.
It would be: Diga la verdad....... this would be like a conversation with another person.
Decir la verdad.......... this would be like writting down something on a paper something personal in some way.
If you need any more help tell me i took both classes last year and it is my first language.
Explanation:
