Many of the headstones in graveyards are made of granite. What are these granite headstones turning into?

The given question is incomplete as the options are missing. The options of this question are as follows-

a) limestone deposits in the soil beneath them, and ions that wash away

b) magnesium-bearing basalt in the soil beneath them, and ions that wash away

c) clays, rust, and sand that go into making soil beneath them, and ions that wash away

d) soluble ions that primarily go into making soil beneath them

e) diet pepsi.

Option (C)

Explanation:

Granite is an intrusive igneous rock that is comprised of minerals such as quartz, feldspar and some amount of amphibole as well as mica. It is a very hard and resistant rocks, and so are commonly used for many purposes such as building stones, headstones and tombstones.

According to the given condition, these rocks constantly interacts with the wind, water, and other factors, as a result of which the rock weathers and creates sediments such as clays, sand and rust particles which are mostly deposited beneath the headstones and some are even washed away by the agents such as wind and water.

Thus, the correct answer is option (C).