The answer most likely is answer choice B it makes the most sense :D
It depends on how you interpret it. While reading it, I interpret it as he means to say that love is as innocent as a person can make it. When he states she walks in beauty, he is most likely referring to the idea that she is beautiful and has a innocent lifestyle. My apologies if this is not the answer you are looking for.
Answer:
the sentence it self explains it all
A. Ancient ruins
B.open-air cinema
C. Green space
D. Skatepark
E. Leisure facilities
F.city center
G. Pedestrian walk way
H. Bike lane
I. Industrial site
J. Sports stadium
They think that the noise is Cecil Jacobs.