In text citation of a  quote from page 51 of the new yorker magazine, an article titled, "the age of selfishness," published on june 14, 2009

the correct answer is:   [c]:

                    →     " leave it out. "  

hope this is to you!

        best wishes!

there is a sequence and logical steps to give an answer of a trouble.

1) strategy is necessary to develop an project idea.

2) to study and know the environment where you are going to work ( ecosystem).

3)   the materials resources to built the ideas.

4) to give a priority order in the context that you study. in this case human needs.