Unique is a synonym for unusual
"<span>C. Ryan has a new wooden baseball bat" does not contain any comma errors. Although it would technically be acceptable to put a comma after "new" it is not necessary. </span>
I think it does not restate the thesis.
Answer:
The context clue in this passage has to do with the mention of the cardinal directions. The narrator mentions that it is difficult to calculate the east and west positions which we read at the end are longitude.
Explanation:
The passage then says that it is easy to calculate latitude by using the position of the sun above the horizon at midday. The passage goes on to clarify that this is the distance north or south of the equator.
