Translation:You have taken the pictures to your gallery.
Duolingo didn't think it was optional. It marked me as incorrect because I didn't include the "a".
the 'a' can not even be heard as it follows the word 'para', ending in an a. I reported it.
This must depend on the speaker. DMF86 is right that both are correct, but personally I would probably only use the perfect tense for this situation if someone was asking if they had EVER taken photos to the gallery.
contextually in english we would preferentially use the perfect tense (have taken) in lieu of the simple past (took). Though both are applicable in terms of translation it's important to recognise the difference between the two. Hope this helps
I wrote, You took the photos for your gallery which was deemed correct by Duo. But then I thought, no... that cannot be; it should be to not for (para being a forward/destination word). This is confirmed by the discussion, but I cannot report my non-correct answer because DL says it is correct so the options are not there for, my answer should not be accepted.