Answer:
option (D)
Step-by-step explanation:
According to the conservation of charge, the charge can neither be created nor be destroyed. It can transfer from one body to another body.
When we rub a balloon with the hair, due to friction, the electrons leaves the hair and then goes to the balloon. So, the hair becomes positively charged and balloon gets negatively charged.
This process is called the charging a body by friction or by rubbing.