Answer: The tissue paper will stick to the balloon because it is positively charged.
Explanation:
When the balloon is rubbed with a wool cloth, then the balloon will have more negative charges than the positive charges.
There is no charge on the tissue paper. It is neutral. When it approaches to the balloon then the additional negative charge on the balloon will attract the positive charge in the tissue paper.
The tissue paper will stick to the balloon because it is positively charged.