Select the most appropriate option to fill in the blank.

Please don’t ______ anyone that I came to your birthday party.

tell

The most appropriate option to fill in the blank is tell.

The word tell can be used as a verb in two different ways. It can be used to mean to inform someone about something, or it can be used to mean to order or command someone to do something. In this case, the sentence is asking someone not to inform anyone that you came to their birthday party. This means that you are asking them not to tell anyone.

The other options do not make sense in the context of the sentence.

• Said is the past tense of the verb tell. It cannot be used in this sentence because the sentence is asking someone not to do something in the present.
• Told is the past participle of the verb tell. It cannot be used in this sentence because the sentence is asking someone not to do something in the present.
• Don't tell is a contraction of the words do and not, followed by the verb tell. It cannot be used in this sentence because it would be grammatically incorrect.
• Say is a verb that can be used to mean to speak or to express something. It cannot be used in this sentence because it does not convey the meaning of "not to inform someone".