Direction: In the question given below, a sentence is given, divided into parts. One of the parts may contain an error. Identify the part that contains the error, and mark it as the answer. Ignore errors of punctuation. In case the sentence is correct as it is, mark option (e), that is, 'No error'. The words in bold are grammatically and contextually correct.

Of far greater concern to environmentalists than the fires is the impact of the increasing numbers of visitors, the threatened grizzly bear population, and the planned development of natural resource projects.