The correct answer should be 4. <span>I chose that bird for its bright coloring.
That can be treated as a pronoun that refers to a specific thing known or understood, which in this case is bird. Here it is a pronoun used as an adjective to describe what bird that is, and the answer is that bird.</span>
You should write about a love story between a boy and a girl. Have them start off as friends and make it so the readers would never expect them to be together.