How many significant figures does 0.058 040 have?

a.6
b.7
c.5
d.4

c 5 because you don’t start counting until it hits a number >0 if it’s to the left of a decimal

Explanation:

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

elements make up everything, and they combine to make compounds.

the answer is c