Viet lai cau su dung menh de chi muc dich

he climbed the tree in order to get a better view

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.

i believe the answer is b.

i am not sure, but i think the correct answer is a.

hope it : -)