Epipetalous and syngenesious stamens occur ina.Solanaceaeb.Brassicaceaec.Fabaceaed.Asteraceae

The stamens are epipetalous and syngenesious in Asteraceae.

Here's a step-by-step explanation:

1. Epipetalous stamens: These are stamens where the filaments are attached to the petals. This is a characteristic of many flowering plants, but not all.

2. Syngenesious stamens: These are stamens where the filaments are fused together, but the anthers are free. This is a characteristic of the Asteraceae family.

3. Solanaceae, Brassicaceae, and Fabaceae: These are all families of flowering plants, but they do not typically have both epipetalous and syngenesious stamens.

4. Asteraceae: This is a large family of flowering plants that includes species like sunflowers and daisies. In this family, the stamens are both epipetalous and syngenesious.

So, the answer to your question is d. Asteraceae.