Answer :
Not charged - balloon A
Positively charged - balloon C
Negatively charged - balloon B and D.
What is charge?
Charge is the property of an object which attracts or repels unlike and like charges respectively.
For balloon A, positive charges are equal to the negative charges. So, it is neutral or having no charge.
For balloon B and D, negative charges are greater than the positive charges. So, balloons are negatively charged.
For balloon C, positive charges are greater than the negative charges. So, balloons are positively charged.
Learn more about charge.
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