.
Read the sentences.
The world’s nations must cooperate. One nation cannot solve the world’s problems by itself.
Which is the best way to combine the sentences using a semicolon?
The world’s nations must cooperate; for one nation cannot solve the world’s problems by itself.
The world’s nations must cooperate; One nation cannot solve the world’s problems by itself.
The world’s nations must cooperate; one nation cannot solve the world’s problems by itself.
