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.
Teachers should get information from the family first. All the other options are extreme or inappropriate for this situation.
