Commercial lac is produced form -

Options

A. The nest of a type of bird
B. The exudation of a type of insect
C. The scale of a type of a fish
D. The root of a plant

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the source of commercial lac. Lac is a substance used in various industries, and it is important to identify its origin.

2. **Evaluating the Options**: The options given are:
- A) Nest of a type of bird
- B) Exudation of a type of insect
- C) Scale of a type of fish
- D) Root of a plant

3. **Identifying the Correct Source**:
- Lac is known to be a resinous substance. It is not derived from birds, fish, or plants.
- The correct source of lac is the secretion from certain insects, specifically the lac insects.

4. **Specifics about Lac Insects**: The most commonly cultivated species for lac production is *Kerria lacca*, which is a type of scale insect. These insects exude a resinous substance that hardens and is harvested as lac.

5. **Conclusion**: Based on the information, the correct answer to the question is that commercial lac is produced from the exudation of a type of insect.

**Final Answer**: Commercial lac is produced from the exudation of a type of insect.

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