It walks on four legs in the morning, two legs at noon and three legs in the evening. what is it?

a person the crawl as a baby, stand up later, then use a cane

a person crawls on all fours when a baby, walks upright in the middle period of their life, and uses a walking stick when they are elderly.

Explanation:

the answer is a hoped this

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.