Diatomaceous earth is the other name of

Diatomaceous earth, also known as Kiesighur, is a naturally occurring, soft, siliceous sedimentary rock.
It's composed of the fossilized remains of diatoms, a type of hard-shelled algae.

Now, let's look at the other options:
Kaolin is a type of clay mineral, primarily used as an adsorbent and in pharmaceuticals.
Bentonite is another type of absorbent clay, often used as a suspending agent.
Talc is a mineral composed of hydrated magnesium silicate, commonly used as a lubricant and absorbent powder.

Therefore, the only option that matches the description of diatomaceous earth is Kiesighur.