What type of source does MacGregor use in this part of
the text?
a poem from the 1800s
a scholarly journal
a quotation from a modern British citizen

The type of source  MacGregor use in this part of  the text-a poem from the 1800s,a quotation from a modern British citizen

Explanation:

The Great Wave” by Neil MacGregor illustrate Japan's isolation from the rest of the world during 1800s.

In the  first few lines the term outside source is used to clearly describes how the rest of the world was involved dealing with monarchies, wars and innovating  new technologies such as  trains and wheels, while Japan decided to isolate itself totally , and  concentrated on painting screens for 200 years.  

It was after  the Meiji Restoration, Japan economy opens itself  to imports and came out of isolation .During this time Japanese art gained immense popularity in the western world. The Japanese artwork  was known as  Japonism also the  woodblock prints of Japan and later on it  became a source of inspiration for artists of many genres.  

The type of source  MacGregor use in this part of  the text-a poem from the 1800s,a quotation from a modern British citizen

the answer is c) !