Which of the following readings is used to determine the availability of minerals?

a.

radioactivity

b.

magnetism

c.

gravity

d.

all of the above

The option that represents thy type of reading which is used to determine the availability of minerals is D. all of the above. Depending on the situation, as well as the type of a mineral, scientists will use radioactivity, magnetism, or gravity in order to determine how much of a mineral there is in a certain area. Some of these techniques are good for one type of a mineral, and some for another, but these scientists use all three types of readings in order to determine what they need.

The answer is D A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure. It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition.