The morpheme gloss is defined as:

• A. Glucose
• B. Tongue
• C. Knowledge
• D. Written, recording

Answer: (B)

This question hinges on the origin of the term gloss in linguistic analysis. Gloss, in this context, is the shorthand label that explains the meaning of a morpheme when we annotate sentences across languages. The word gloss itself comes from the Greek/Latin root glossa, meaning tongue, i.e., language or spoken expression. So the morpheme gloss is defined by its connection to language and meaning—the idea that we’re “translating” or labeling a morpheme’s sense in another tongue. That etymology is why the best choice is Tongue.

The other options don’t fit this origin: glucose refers to a sugar, knowledge to understanding, and written, recording to documentation. They don’t capture the linguistic sense embedded in the term gloss.