Concept:A positively charged electroscope loses its leaf divergence when a negatively charged rod is brought near the cap due to electrostatic induction.
Explanation:The electroscope already has positive charges, so its leaf is initially diverged.
When a negatively charged rod is brought near the cap, it attracts the positive charges upward to the cap.
This reduces the positive charge on the leaf.
As a result, the leaf loses its repulsion and collapses.
The rod is only brought near, not touched, so no permanent charge transfer occurs.
Answer:B. Collapses