Identify potential substitutes and complements and their impact on the demand curve?

The student demonstrates a reasonable but not complete understanding of economic issues and can answer only one section of the question relevant to the analysis.
Only one of the section of the question is accurately defined and discussed in the context of the assignment.
The student draws few accurate conclusions for each section of the question. There are several mistakes,
Writing quality: paper includes numerous errors. Requires some effort to understand.