Answer:
Option 2 Object 1 is a conductor and object 2 is an insulator.
Option 4 Object 1 could be copper and object 2 could be rubber.
Object 5 Object 1 could be used to connect a circuit together.
Explanation:
An electroscope is a device that is used to identify and measure that whether the given object carries or bear a current or not.
First object deflects the electroscope which means it carries the current and only a conductor can carry a current. Thus, the first object must be a conductor.
On the other hand second object do not deflects the electroscope which means it does not carries the current and hence it is an insulator.
Copper is a conducting material while rubber is a non conducting material. Also a conducting material is used to connect a circuit.
Thus, option 2, 4, 5 are correct.