Answer :
The correct verb form that shows the imperative mood is B. Di
What is an Imperative Mood?
This refers to the verb form that is used to issue a command or make a request to a person.
Hence, we can see that the given sentence talks about an order given to a person to tell the truth, and given the conjugation, the best form of "decir" is B. Di.
Read more about imperative mood here:
https://brainly.com/question/1295970
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