Identify the correct sequence of phases of sigmoid curve
(A) log (B) lag (C ) stationary

Options

A. `A to B to C`
B. `B to C to A`
C. `B to A to C`
D. `C to B to A `

Answer

To identify the correct sequence of phases of the sigmoid growth curve, we will analyze the three phases: lag, log, and stationary.

### Step-by-Step Solution:

1. **Understanding the Phases**:
- **Lag Phase**: This is the initial phase where growth is slow. During this phase, the population is adapting to the environment and there are limited resources. There is minimal increase in size or population density.
- **Log Phase**: Following the lag phase, the population begins to grow rapidly. This is the exponential growth phase where resources are still available, and the population can increase significantly.
- **Stationary Phase**: In this final phase, the growth rate starts to decline as resources become limited. The population reaches a point where it stabilizes, and the number of individuals remains constant due to limited resources.

2. **Arranging the Phases**:
- Based on the definitions:
- The first phase is the **Lag Phase (B)**.
- The second phase is the **Log Phase (A)**.
- The third phase is the **Stationary Phase (C)**.

3. **Final Sequence**:
- Therefore, the correct sequence of the phases of the sigmoid growth curve is: **Lag Phase (B) → Log Phase (A) → Stationary Phase (C)**.

### Conclusion:
The correct sequence is **(B) Lag → (A) Log → (C) Stationary**.