A runner usually comes up in the earth away from the rose union or can grow below the union Cabrachan. It may have finer, brighter green leaves and small prickles closer together.

A runner wears trainers and moves fast!!

It's not always the case, but quite often the rose you want has five leaflets in each leaf and the runner has seven - or more.
And it moves fast - or grows quickly - in this case :-)

No it runs across a table Volunteer or takes a message to someone......English is so confusing...amazing so many across the world speak such good English. I have a feeling this might be an exam question.