Triboelectric charging between plastic and wool Steps:

• Rubbing insulators like plastic and wool causes electron transfer via the triboelectric effect.
• Wool, higher in the triboelectric series, loses electrons to plastic.
• Plastic gains electrons, resulting in a negative charge.
• Wool loses electrons, resulting in a positive charge.

Why C is correct:

• Matches the triboelectric series: plastic gains electrons (negative), wool loses electrons (positive).

Why the others are wrong:

• A: Plastic gains electrons but cannot remain neutral; it becomes negative.
• B: Incorrect direction; plastic gains, not loses, electrons.
• D: If plastic loses electrons, it becomes positive and wool negative, not positive neutral.

Final answer: C