When a plastic rod is rubbed with a wool cloth, the wool acquires a positive charge. What is the best explanation for this effect?

The best explanation for the charging effect when a plastic rod is rubbed with a wool cloth is that electrons are transferred to the rod. When the rod is rubbed with the wool, electrons from the wool are removed and accumulate on the plastic rod. This results in the wool gaining a positive charge (due to the loss of negatively charged electrons), while the plastic rod becomes negatively charged due to the excess electrons it acquires.