Step-by-step explanation:
An open system is defined as a system in which there occurs exchange of both matter and energy as well.
For example, a cup full of hot tea is an open system which can exchange matter and energy with its surroundings.
On the other hand, a closed system is defined as a system which can exchange energy with its surrounding but it cannot exchange matter.
For example, a cup of hot tea closed with a lid is a closed system which can exchange energy with its surrounding.
Therefore, we can conclude that the statement in an open system matter freely moves and energy can enter or leave the system.