What is the purpose of a web, or cluster diagram?

Which statement best explains coelho's choice in the alchemist to have the boy robbed as soon as he arrives in tangiers? it reveals how working for the crystal merchant is part of the boy's personal legend. it illustrates how personal legends can change quickly if one is not careful. it shows how the boy makes poor choices and needs much guidance on his journey. it highlights the dangers of being in a new and unknown country.