answer question! which words in the sentence are the adjective phrase?

then gutenberg had an idea about letter molds.

a.
gutenberg had

b.

then gutenberg

c.
an idea

d.
about letter molds

answer; (external conflict)

- "d.)  describe the iroquois belief of how the earth was created. for the iroquois, there was no reason to explain the importance of rituals. also, as animists, they didn't need a special elaboration as to why animals are important or why they had a crucial role in the earth's creation. this is just an authentic myth that explains the creation of the earth. every culture has produced creation myths."