out of 50 review questions I'm struggling with these. Someone please check/correct my answers!

Question

Look at the following pairs of sentences. Identify whether or not they are simple time relationships or cause-and-effect relationships.

1.)Clark was hammering a nail into the wall. He missed and hit his finger.
=cause/effect
2.)Clark ran out of nails. He went to the hardware store to buy some more nails.
=simple time
3.)The kid stole the car. He was arrested.
=cause/effect
4.)I was talking on the phone. The line went dead.
=simple time
5.)Benji walked through the mud. There are muddy footprints leading to his room.
=simple time

Answer 1

I disagree with 5.

Answer 2

Thanks:)