Felling of trees on road in holding is:

Regulations regarding tree felling often differentiate between public land, protected areas, and private holdings, where owners typically have more discretion over their property.

• Not offence (B) is the correct answer. This implies that within one's own holding, felling trees on a road (presumably a private road or one that is part of the holding) might not be an offense, depending on specific local laws that often distinguish between public and private land. This suggests a legal context where such felling is permitted without specific prohibition.
• "Serious offence" (A) and "Punishable" (C) are too strong unless specific regulations prohibit it, which the correct answer contradicts.
• "Allowed only with permission" (D) is often true for public land or protected trees, but the question specifies "on road in holding," which might imply private land where more liberty is allowed.