Sentence:  Sections B and C are known as Examination <WSD>Gobbets</WSD>. A <WSD>Gobbet</WSD> is a short documentary extract, image or other historical source that has been selected to illustrate a particular theme. 
Meaning of the word marked with <WSD> tags:  An extract of text, or image (especially a quotation), provided as a context for analysis, discussion, or translation in an examination.