3. which statement is true about dialogue? (1 point)
the words each character says are enclosed by quotation marks.
the words each character says appear next to the character's name.
the words that the main character says appear in italics or brackets.
the words that address the conflict are shown in heavy black type.

The correct answer is the first option: The words each character says are enclosed by quotation marks.

Anything that a character says is always in quotation marks. This makes it much easier for readers to follow the characters' speech and understand the story.
For example: As Sarah closed her notebook, she accidentally gave herself a paper cut. "Ouch!" She exclaimed. 
The word "Ouch" is enclosed in quotation marks which visually shows that the character spoke.

One of the only instances that a character's speech appears next to his/her name is in a play. Plays are often written with few actions and lots of speech. This is a format in which the character's words will appear next to his/her name.
Words that the main character says are also always in quotation marks, not italics or brackets. However, often times, words that a character thinks/says to himself may appear in italics. 
Words that address a conflict are also never in bold or heavy black type. Conflict is written in the same format as the rest of the dialogue.

That's something your gonna have to yourself with buddy!