Which one is a complete sentence?" the dog is mean
The dog is mean
The dog is mean.
Is mean
O The dog mean

The 3rd one “The dog is mean.”

Explanation: capitalized sentence, perfect punctuation and it’s the only one that makes sense

citizens are given 25 years of life to prove their worth to society; if they fail to do great things

it creates a visual picture of the man.

it conveys what the scene sounds like.

it describes the actions of the boy.

it reveals the poet’s opinion of the characters.

it encourages readers to care for the characters.