Which is the best synonym for the underlined word? to build a fire

Which theme is best supported by the descriptive detail in this passage from my antonia

How does the map develop the central idea that scholars at jundi shapur spread the knowledge of sugar? the map illustrates the spread of sugar from new guinea to persia. the map shows that sugar was being refined primarily in the north rather than the south. the map illustrates the spread of knowledge about refined sugar processing to egypt. the map illustrates that people in china knew how to refine sugar and shared this knowledge. the answer is c

Brainliest asap! 98 points what goes up and down but stays in one place?