Religion and culture are connected because depending on where you live and what your background culture is, this strongly affects how your beliefs about religion and which religion you will belong to in the first place are shaped. Both are very important and intertwined with culture itself.
The answer is option a, that is "The stamps were carved out pure limestone".This sentence is false because the stamps were actually made of another kind of rock such as stearite which is a magnesium-rich rock composed of mineral talc and some of them are also made of silver or calcite.
