Answer: Definition, explanation.
Explanation:
Context clues are words or phrases that help, through the context they emit, to conceptualize and show the meaning of other words present in the same text, but which are unusual, or unknown. Context clues allow reading to continue without interruption to look for the meaning of words.
In the case of the question above, the word "millet" has as a context clue the word grain, which defines and explains it, showing that the "millet" is a grain that grows in yellow and fertile soil.