Which of the following statements is correct ?

Options

A. Geometric growth produces J-shaped population growth curve
B. Logistic growth occurs when resources are limiting
C. Equation for exponential growth is `N_(t)=N_(0)e^(rt)`
D. All of these

Answer

To solve the question regarding the age pyramid and identify which age group is represented at the bottom, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Age Pyramid Structure**:
- An age pyramid is a graphical representation of the age distribution of a population. It typically has three main sections: the bottom, middle, and top.

2. **Identify the Sections of the Age Pyramid**:
- **Bottom Section**: This part of the pyramid represents the youngest age group, often referred to as the pre-reproducing age. This is where individuals who are not yet of reproductive age are categorized.
- **Middle Section**: This section represents the reproducing age group, which includes individuals who are capable of reproduction.
- **Top Section**: This part represents the post-reproducing age, which includes older individuals who are past their reproductive years.

3. **Analyze the Options Provided**:
- Option 1: Pre-reproducing age
- Option 2: Post-reproducing age
- Option 3: Reproducing age
- Option 4: None of these

4. **Determine the Correct Answer**:
- Since the question asks for the age group represented at the bottom of the age pyramid, and we have established that the bottom section represents the pre-reproducing age, the correct answer is **Option 1: Pre-reproducing age**.

### Conclusion:
The correct statement regarding the age group represented at the bottom of the age pyramid is that it corresponds to the pre-reproducing age.

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