Question

drag the missing word into place
talc is one of the softest minerals. thats the it is best
known for.
property luster formula

Explanation:

Talc being one of the softest minerals refers to a characteristic or quality it has. In mineralogy, such characteristics are called properties. Luster refers to how a mineral reflects light (e.g., metallic, non - metallic luster). Formula refers to the chemical composition (e.g., for talc, the formula is \(Mg_3Si_4O_{10}(OH)_2\)). Since the sentence is about a characteristic (softness) that the mineral is known for, the word "property" fits best.

Answer:

property