Generally growth is defined as

Options

A. temporary change in fresh weight.
B. temporary change in dry weight.
C. permanent change in girth only.
D. permanent change in length and girth

Answer

**Step-by-Step Solution:**

1. **Understanding Growth**: Growth in biological terms is defined as a positive and irreversible change in size and mass of an organism over a period of time. This means that growth is not just a temporary change but a lasting one.

2. **Evaluating the Options**:
- **Option 1**: "Temporary change in fresh weight" - This is incorrect because growth is not temporary; it is a permanent change.
- **Option 2**: "Temporary change in dry weight" - This option is also incorrect for the same reason as above; growth is not temporary.
- **Option 3**: "Permanent change in girth only" - This option is partially correct but incomplete, as growth can involve changes in both length and girth.
- **Option 4**: "Permanent change in length and girth" - This is the most accurate definition of growth, as it encompasses the overall increase in size.

3. **Conclusion**: Based on the evaluation of the options, the correct answer is **Option 4: Permanent change in length and girth**.

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