_____________ is the name of the dried skeleton of ‘Venus flower basket’

The correct option is Euplectella.

Let us break down the explanation step-by-step:
1. Taxonomy and Classification: Euplectella is a genus of glass sponges in the phylum Porifera. They are characterized by a skeleton made of siliceous (glass-like) spicules.
2. The Venus Flower Basket: The species Euplectella aspergillum is commonly known as the "Venus flower basket". When the living tissues of the sponge die and decay, they leave behind a beautiful, intricate, curved, and cylindrical lattice-like skeleton composed of silica.
3. Common Names of Other Options:
- Spongilla is a genus of freshwater sponges (commonly called freshwater sponges).
- Euspongia (or Spongia) is commonly known as the "bath sponge".
- Leucosolenia is a genus of small, tubular, calcareous sponges.
Therefore, the dried skeleton of "Venus flower basket" is indeed Euplectella.