Which sentence shows a relationship between two independent clauses?

Question

1. the floods caused widespread damage, and residents were without power for a week

2. he wants to go to the park because it sunny

3. when brian gets bored, he goes to the internet and he looks for a game to play

4. i wish i had more ice cream

Answer 1

3. when brian gets bored, he goes to the internet and he looks for a game to play