Out of the following senteces which of these has a run on se

Out of the following senteces, which of these has a run on sentence-


1). The chest contained large amounts of gold, rubies, sapphires and other precious stones.

2). She ran out of the room the shadows in the corner had scared her.

3). I will never fly again it is far too polluting.

4). She always recycles her bottles they are collected twice a month.

Solution

Answer:2,3,4 are correct \"run on sentence\" should not have conjunction or punctuation between two phrases.