What u have to do is make a web out line (3)Web Outlining Assignment

Experience
(3)
Web Organization
(3)
Creativity

Online diagramming is surprisingly popular, and Gliffy is one of the best tools for the job. It’s mostly used for charts and flows, but this is a great tool for creating content wireframes as well. Since it’s all digital, you can link ideas from an Excel sheet or a Word doc and create a single, unified content outline.

Explanation:

taking into account that a theme is the central topic a text treats and can be developed through a story, play, poem etc. the following are themes that can be further developed:  

my best friend jeffrey has many unusual interests. (the story could be about each of the unususal interests)

once a man gives his soul over to evil, he can never go back. (this could be a saying or a proverb)

the three sheepdogs lay around the yard all day. (it could be developed detailing how each of these sheepdogs lay around)

a priest's collar has an unusual effect upon people. (it could be developed detailing the different effect upon people)

innocence is a powerful force in a world full of corruption. (it could be developed detailing how is a world full of corruption)

king lear is a play shakespeare wrote later. (it is just a sentence and doesnt give any idea or topic to be discussed in details.

evil often wears the disguise of innocence. (this could be a saying or a proverb)

my best guess would be: d allusion

makes the most sense