ChrisLele
In this question, we want 'looking to', as the cities are looking to their waterfronts to help out (the cities are not literally viewing their waterfronts, the way 'looking at' implies). So we can get rid of (B) and (E). Next, we have 'but one...large number...communities that'. Because the relative clause is modifying communities, we want the plural form, 'are' and the plural pronoun 'their', which leaves us with (C).
With
its plan to develop seven and a half acres of shore land, Cleveland is but one of a large number of communities on the Great Lakes that is looking to
its waterfront as a way to improve the quality of urban life and attract new businesses.
(A) is looking to its waterfront as a way to improve the quality of urban life and attract
(B) is looking at its waterfront to improve the quality of urban life and attract
(C) are looking to their waterfronts to improve the quality of urban life and attract
(D) are looking to its waterfront as a way of improving the quality of urban life and attracting
(E) are looking at their waterfronts as a way they can improve the quality of urban life and attract
'its plan' here might still be talking about Cleveland, but not the other communities on the Great lakes. Plus, 'looking to its waterfront' still coincides with the earlier statement that Cleveland is hoping to improve, but not all the other communities together.
I still have an issue with this question
ChrisLele, would you mind answering this for me?