One of the important criteria of a good demand forecasting techniques is:  A. Adaptability  B. Growth ability  C. strength ability  D. Longevity or Durability

To determine the most important criterion of a good demand forecasting technique, let's analyze each option:

1. Adaptability: A good demand forecasting technique must be able to adjust to changes in market conditions, consumer behavior, and external factors. This is crucial because these elements can significantly impact demand.

2. Growth ability: While it is important for a forecasting technique to be able to grow or improve over time, this is not always the primary criterion. Growth can result from new data or methods but is not essential for the technique's effectiveness.

3. Strength ability: This term is a bit vague. If it implies robustness, it could be relevant, but it's not commonly used in the context of demand forecasting techniques.

4. Longevity or Durability: Longevity suggests that a technique remains relevant and effective over time. However, the market is constantly evolving, and even the best techniques may need to be updated or replaced.

Considering these factors, the most critical criterion among the options presented is A. Adaptability. A forecasting technique that is adaptable can adjust to new data and changes in the environment, making it the most valuable for accurately predicting demand.