To protect silk clothes and woolen clothes, we should use:

Naphthalene balls are used to protect wool and silk clothing.
Long-term storage of the clothing causes insects to begin destroying the fabric. Therefore, these garments need to be insect-proof. As a result, we employ naphthalene balls.
The naphthalene balls can be kept immediately between clothing because they are insect-repellent. Due to its smell, naphthalene has the ability to repel insects.
An aromatic hydrocarbon with the chemical formula ${\mathrm{C}}_{10}{\mathrm{H}}_8$ is naphthalene.

When clothes are stored for a long time, insects begin to damage the clothes. Therefore, these garments should be protected from pests. Therefore, we use naphthalene balls. Naphthalene balls are resistant to insects, so these balls can be stored directly between clothing. Naphthalene has an insect repellent due to its odor. The naphthalene balls have the capacity to go straight from solid to gas. Sublimation is the name of this process. As a result, the solid naphthalene balls contained in the clothing begin to immediately turn into gas. This gas, which is poisonous, is used to either kill or ward off insects. These balls leave no trace because they turn into gas when heated.

Hence, option D is correct.