Answer:
Correct answer is D. all of the above.
Step-by-step explanation:
The answer is simple because for example if you go to a church or some other pilgrimage site you will reach a building that has certain architectural shape, as mentioned in option A. Also in it you can find icons, mosaics, statues or some similar representation of certain religious group. Option C is also correct as people usually buy some small souvenirs there - for example a cross or a candle or something similar.