Answer:
The sentence that contains a verb in the imperative form is the following one: Tell me about Word Press Freedom Day.
Step-by-step explanation:
Mood is the form a verb takes to show how it is to be regarded. The imperative mood is a verb form that makes a command or a request. In this case, the speaker is tellling the listener to tell him/her something about the World Press Freedom Day, he/she is not asking, he/she is ordering him/her to do so.