Answer:
- 'Explanation.'
Step-by-step explanation:
Context clues are demonstrated as the clues or hints provided by the author to assist the readers in determining the meaning of an unfamiliar word used in the text.
As per the question, the 'explanation' is the kind of context clue that aids the reader to underlie and understand the meaning of the unusual word 'solstice.' The author provides the hints in the form of a definition or explanation of the word('a time of year when the sun is farthest north or south of the equator') to clarify the meaning of the word to the audience. This aids the readers to perceive the word coherently.