Which of the following is made from wood pulp?

Rayon 

The correct answer is option 4. Rayon.

Out of the options you listed, Rayon is made from wood pulp.

Rayon is a semi-synthetic fiber manufactured from cellulose, a natural polymer found in wood pulp. The cellulose undergoes chemical processing to be converted into fibers suitable for textiles and other applications.

Here's why the other options are not made from wood pulp:

Plastic: While some bioplastics can be derived from plant materials, most common plastics are not made from wood pulp but rather from petroleum.

Wool: Wool is a natural protein fiber derived from sheep or other animals.

Jute: Jute is a natural fiber obtained from the jute plant, not wood pulp.