The correct answer is complement.
Like you wrote above, to complete is when you make something whole. Complement is something that completes your collection. The bronze statue completed her collection perfectly, which is why it was a good complement. Somebody can give her a compliment on her complement, however, meaning that he or she can praise the statue. :)
Answer:
Option C: Location and Transportation are the major factors for the growth of American cities.
Explanation:
Natural resources have always helped America in its growth. Because of the awesome location besides Hudson river, transportation became quite easy. This was the main reason for building the canal over it. It, thereby helped in trade and led to a good growth of cities. People could move in from rural areas and settle here and help in the growth of cities.
Hence, Option C is most appropriate. It is not because of land or hierarchies. It was also not because of the climate and safety that Americas cities grew, as per other options, A, B and D.