This passage revolves around the way that photography has embraced antiquated techniques and in many cases, they are preferred as a result of the idiosyncratic results they produce.
This is answer choice C, the surprising new development in the photographic arts (embracing old techniques).
Answer choice A is incorrect because the author of the passage is simply describing this new trend in the photographic arts. They do not have a position and neither for nor against these new techniques being adopted by modern day photographers.
I hope this helps. Please let me know if you have any other questions!