Pineapple (ananas) fruit develops from

Options

A. A unilocular polycarpellary flower
B. A multipistillate syncarpous flower
C. A cluster of compactly borne flowers on a common axis
D. A multilocular monocarpellary flower

Explanation

To determine the origin of the pineapple (Ananas) fruit, we need to analyze the options provided:

1. **Understanding the Flower Structure**: Pineapple fruit develops from flowers, and we need to identify the type of flower structure it originates from.

2. **Evaluating the Options**:
- **Option A**: A unilocular polycarpillary flower - This refers to a flower with multiple carpels but only one locule. This does not fit the pineapple's structure.
- **Option B**: A multi-pistillate syncarpus flower - This describes a flower with multiple fused carpels, but it does not specifically indicate the compact arrangement of flowers.
- **Option C**: A cluster of compactly borne flowers on a common axis - This option suggests that the pineapple fruit develops from a group of flowers closely arranged on a single stem, which aligns with the structure of pineapple.
- **Option D**: A multilocular monocarpillary flower - This refers to a flower with one carpel and multiple locules, which does not describe the pineapple.

3. **Conclusion**: After evaluating the options, it's clear that the pineapple fruit develops from a cluster of compactly borne flowers on a common axis, which corresponds to **Option C**.

### Final Answer:
The pineapple (Ananas) fruit develops from **a cluster of compactly borne flowers on a common axis** (Option C).